CVE-2026-45568

CRITICALNVD 9.19.1
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.5% (46th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3

Also known asEUVD-2026-44972 (ENISA EUVD) · GHSA-jh67-hwqw-m5r7 (GitHub Security Advisories) · PYSEC-2026-577 (OSV.dev)Source: ENISA EUVD

9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

zrok is software for sharing web services, files, and network resources. Prior to 2.0.3, zrok's Python SDK ProxyShare Flask proxy route accepts an absolute URL in the request path and passes it to urllib.parse.urljoin, allowing the requested path to replace the configured target host and causing requests.request to return a server-side response from an attacker-chosen URL. This issue is fixed in version 2.0.3.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
56
EG Risk 56/100

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)
Severity91% × 45%
Impact severity (EG Severity): CVSS 9.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
46th
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 (9.1): severity, escalated by confirmed exploitation. This CVE's 9.1 is its impact severity (EG Severity), not escalated.

EG Severity
9.1 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). 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 low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.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 low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (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

May 19, 2026

Last Modified

October 24, 2026

Advisory Details (3)

Auto-updated Sep 16, 2026
Patch available. Sources: github_commit, github_release, github.
GitHub advisoryMentions a patch (unverified)

zrok Python ProxyShare can be used as an SSRF proxy through absolute URL paths · Advisory · openziti/zrok · GitHub

https://github.com/openziti/zrok/security/advisories/GHSA-jh67-hwqw-m5r7
GitHub release Patch Available

v2.0.3

Patch available: openziti/zrok v2.0.3

https://github.com/openziti/zrok/releases/tag/v2.0.3
GitHub commit

commit 7c1dc3ecd1c8 (openziti/zrok)

Fix landed in openziti/zrok commit 7c1dc3ecd1c8 — awaiting tagged release

https://github.com/openziti/zrok/commit/7c1dc3ecd1c89d8cd2e845a72c3878bd2d31b4fe

Vendor Advisories for CVE-2026-45568(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
pipzrok—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
zrok0.4.47 ... 1.1.9 (22 versions)
  • 0.4.47 through 1.1.11: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 62× 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 279 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 179 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:52 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  2. 2026-11-13 12:52 UTCEchelonGraph re-scored
  3. 2026-11-13 12:52 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  4. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  5. 2026-11-12 12:51 UTCEchelonGraph re-scored
  6. 2026-11-12 12:51 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  7. 2026-11-11 16:39 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  8. 2026-11-11 12:51 UTCEchelonGraph re-scored
  9. 2026-11-11 12:51 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  10. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  11. 2026-11-10 12:51 UTCEchelonGraph re-scored
  12. 2026-11-10 12:51 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  13. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  14. 2026-11-09 12:51 UTCEchelonGraph re-scored
  15. 2026-11-09 12:51 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  16. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  17. 2026-11-08 12:51 UTCEchelonGraph re-scored
  18. 2026-11-08 12:51 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  19. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  20. 2026-11-07 12:51 UTCEchelonGraph re-scored
  21. 2026-11-07 12:51 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  22. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  23. 2026-11-06 12:52 UTCEchelonGraph re-scored
  24. 2026-11-06 12:52 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  25. 2026-11-06 09:25 UTCOSV refresh
Show 75 more
  1. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  2. 2026-11-05 12:53 UTCEchelonGraph re-scored
  3. 2026-11-05 12:53 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  4. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  5. 2026-11-04 12:54 UTCEchelonGraph re-scored
  6. 2026-11-04 12:54 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  7. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  8. 2026-11-03 12:54 UTCEchelonGraph re-scored
  9. 2026-11-03 12:54 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  10. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  11. 2026-11-02 12:53 UTCEchelonGraph re-scored
  12. 2026-11-02 12:53 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  13. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  14. 2026-11-01 12:53 UTCEchelonGraph re-scored
  15. 2026-11-01 12:53 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  16. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  17. 2026-10-31 12:54 UTCEchelonGraph re-scored
  18. 2026-10-31 12:54 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  19. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  20. 2026-10-30 12:54 UTCEchelonGraph re-scored
  21. 2026-10-30 12:54 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  22. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  23. 2026-10-29 12:54 UTCEchelonGraph re-scored
  24. 2026-10-29 12:54 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  25. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  26. 2026-10-28 12:55 UTCEchelonGraph re-scored
  27. 2026-10-28 12:55 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  28. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  29. 2026-10-27 12:55 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  30. 2026-10-26 23:59 UTCEchelonGraph re-scored
  31. 2026-10-26 23:59 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  32. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  33. 2026-10-25 20:25 UTCEchelonGraph re-scored
  34. 2026-10-25 20:25 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  35. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  36. 2026-10-25 14:26 UTCEchelonGraph re-scored
  37. 2026-10-24 20:26 UTCEchelonGraph re-scored
  38. 2026-10-24 20:26 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  39. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  40. 2026-10-24 11:32 UTCEchelonGraph re-scored
  41. 2026-10-24 11:32 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  42. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  43. 2026-10-23 11:32 UTCEchelonGraph re-scored
  44. 2026-10-23 11:32 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  45. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  46. 2026-10-22 11:32 UTCEchelonGraph re-scored
  47. 2026-10-22 11:32 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  48. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  49. 2026-10-21 11:33 UTCEchelonGraph re-scored
  50. 2026-10-21 11:33 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  51. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  52. 2026-10-20 11:34 UTCEchelonGraph re-scored
  53. 2026-10-20 11:33 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  54. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  55. 2026-10-19 11:33 UTCEchelonGraph re-scored
  56. 2026-10-19 11:33 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  57. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  58. 2026-10-18 09:17 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  59. 2026-10-18 03:38 UTCEchelonGraph re-scored
  60. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  61. 2026-10-17 07:35 UTCEchelonGraph re-scored
  62. 2026-10-17 07:34 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  63. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  64. 2026-10-16 07:34 UTCEchelonGraph re-scored
  65. 2026-10-16 07:34 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  66. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  67. 2026-10-15 06:29 UTCEchelonGraph re-scored
  68. 2026-10-15 06:28 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  69. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  70. 2026-10-14 02:08 UTCEchelonGraph re-scored
  71. 2026-10-14 02:08 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  72. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  73. 2026-10-12 22:30 UTCEchelonGraph re-scored
  74. 2026-10-12 22:29 UTCGHSA enrichmentGHSA-jh67-hwqw-m5r7 · GitHub severity CRITICAL
  75. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile

Frequently asked(5)

What is CVE-2026-45568?
CVE-2026-45568 is a critical-severity vulnerability; its CVE record was published on May 19, 2026. zrok is software for sharing web services, files, and network resources. Prior to 2.0.3, zrok's Python SDK ProxyShare Flask proxy route accepts an absolute URL in the request path and passes it to urllib.parse.urljoin, allowing the requested path to replace the configured target host and causing…
When was the CVE record for CVE-2026-45568 published?
The CVE record for CVE-2026-45568 was published on May 19, 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 October 24, 2026; the record at its source may have been updated since.
Is CVE-2026-45568 actively exploited?
CVE-2026-45568 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45568?
CVE-2026-45568 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-45568?
A fix for CVE-2026-45568 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-45568 are linked in the Vendor Advisories panel on this page.

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