CVE-2026-0637

MEDIUMPre-NVD 5.45.4
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 5.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (9th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 4.4 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-08-06) is not newer than that change (2026-11-04), so it does not.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-53820 (ENISA EUVD) · GHSA-q9jj-jm6w-fpgf (GitHub Security Advisories)Source: ENISA EUVD

5.4EG
EchelonGraph verdictMonitorNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.4Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

The CVE record's CNA (WSO2 LLC) lists WSO2 API Manager versions 3.2.0 up to but not including 3.2.0.464, 3.2.1 up to but not including 3.2.1.83, 4.1.0 up to but not including 4.1.0.249, 4.2.0 up to but not including 4.2.0.189 and 4 more ranges; WSO2 API Control Plane versions 4.5.0 up to but not including 4.5.0.45 and 4.6.0 up to but not including 4.6.0.13 as affected. No release containing a fix is confirmed on record.

When a proxy server is configured with customUrl.enabled, the component accepts user-supplied input within forwarded HTTP headers without enforcing expected validation constraints. A malicious actor can manipulate these headers to influence the URL construction process, leading to an open redirect vulnerability. Additionally, unsanitized header values are written to application logs.

An attacker can exploit this to force redirection to arbitrary malicious domains, potentially enabling phishing attacks. Furthermore, they can inject forged entries into application logs, impacting the reliability of security logs and potentially hindering incident investigation.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity54% × 45%
Impact severity (EG Severity): CVSS 5.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.
EPSS PROB
0.2%
EPSS %ILE
9th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.4): severity, escalated by confirmed exploitation. This CVE's 5.4 is its impact severity (EG Severity), not escalated.

EG Severity
5.4 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 6, 2026

Last Modified

November 4, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
No fix on record yet.

Vendor Advisories for CVE-2026-0637(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 33× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 192 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 92 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-11-11 16:37 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-11-10 16:41 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  4. 2026-11-09 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  5. 2026-11-08 16:37 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  6. 2026-11-07 16:37 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  7. 2026-11-06 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  8. 2026-11-05 16:36 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  9. 2026-11-04 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-11-04 14:28 UTCEchelonGraph re-scored▲ 1.00
  11. 2026-11-04 14:28 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub severity MODERATE · GitHub CVSS 4.4
  12. 2026-11-04 13:55 UTCMITRE cvelistV5CVSS v3 → 5.4
  13. 2026-11-04 13:46 UTCEchelonGraph re-scored
  14. 2026-11-04 13:46 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub severity MODERATE · GitHub CVSS 4.4
  15. 2026-11-03 16:45 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-11-02 16:43 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-10-25 15:58 UTCEchelonGraph re-scored
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  1. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  3. 2026-10-23 10:01 UTCEchelonGraph re-scored
  4. 2026-10-23 10:01 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  5. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  7. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  8. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-10-18 05:12 UTCEchelonGraph re-scored
  11. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  13. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  14. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  15. 2026-10-12 16:42 UTCEchelonGraph re-scored
  16. 2026-10-11 20:17 UTCEchelonGraph re-scored
  17. 2026-10-11 18:29 UTCEchelonGraph re-scored
  18. 2026-10-11 15:03 UTCEchelonGraph re-scored
  19. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  20. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  21. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  22. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  23. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  24. 2026-10-06 23:33 UTCEchelonGraph re-scored
  25. 2026-10-06 23:33 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  26. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  27. 2026-10-05 19:30 UTCEchelonGraph re-scored
  28. 2026-10-05 19:30 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  29. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  30. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  31. 2026-10-04 05:54 UTCEchelonGraph re-scored
  32. 2026-10-04 05:54 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  33. 2026-10-02 09:47 UTCEchelonGraph re-scored
  34. 2026-10-02 09:47 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  35. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  36. 2026-10-01 01:49 UTCEchelonGraph re-scored
  37. 2026-10-01 01:49 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  38. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  39. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  40. 2026-09-29 06:02 UTCEchelonGraph re-scored
  41. 2026-09-29 06:02 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  42. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  43. 2026-09-27 17:35 UTCEchelonGraph re-scored
  44. 2026-09-27 17:35 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  45. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  46. 2026-09-25 04:27 UTCEchelonGraph re-scored
  47. 2026-09-25 04:27 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  48. 2026-09-23 16:11 UTCEchelonGraph re-scored
  49. 2026-09-23 16:10 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  50. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  51. 2026-09-22 14:18 UTCEchelonGraph re-scored
  52. 2026-09-22 14:18 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  53. 2026-09-21 12:58 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  54. 2026-09-20 05:13 UTCEchelonGraph re-scored
  55. 2026-09-20 05:13 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  56. 2026-09-19 03:38 UTCEchelonGraph re-scored
  57. 2026-09-19 03:38 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  58. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  59. 2026-09-18 02:22 UTCEchelonGraph re-scored
  60. 2026-09-18 02:22 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  61. 2026-09-17 01:03 UTCEchelonGraph re-scored
  62. 2026-09-17 01:03 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  63. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  64. 2026-09-15 14:50 UTCEchelonGraph re-scored
  65. 2026-09-15 14:50 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  66. 2026-09-14 13:08 UTCEchelonGraph re-scored
  67. 2026-09-14 13:08 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  68. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  69. 2026-09-13 11:12 UTCEchelonGraph re-scored
  70. 2026-09-13 11:12 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  71. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  72. 2026-09-12 09:58 UTCEchelonGraph re-scored
  73. 2026-09-12 09:58 UTCGHSA enrichmentGHSA-q9jj-jm6w-fpgf · GitHub CVSS 4.4
  74. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  75. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.1% · 1st percentile

Frequently asked(5)

What is CVE-2026-0637?
CVE-2026-0637 is a medium-severity vulnerability; its CVE record was published on August 6, 2026. When a proxy server is configured with customUrl.enabled, the component accepts user-supplied input within forwarded HTTP headers without enforcing expected validation constraints. A malicious actor can manipulate these headers to influence the URL construction process, leading to an open redirect…
When was the CVE record for CVE-2026-0637 published?
The CVE record for CVE-2026-0637 was published on August 6, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 4, 2026; the record at its source may have been updated since.
Is CVE-2026-0637 actively exploited?
CVE-2026-0637 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-0637?
CVE-2026-0637 has a CVSS base score of 5.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-0637?
No fix for CVE-2026-0637 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (WSO2 LLC) lists WSO2 API Manager versions 3.2.0 up to but not including 3.2.0.464, 3.2.1 up to but not including 3.2.1.83, 4.1.0 up to but not including 4.1.0.249, 4.2.0 up to but not including 4.2.0.189 and 4 more ranges; WSO2 API Control Plane versions 4.5.0 up to but not including 4.5.0.45 and 4.6.0 up to but not including 4.6.0.13 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-0637 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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