CVE-2026-62143

HIGHPre-NVD 8.38.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 66% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.3Exploit: None knownExposed: 0

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

A Server-Side Request Forgery (SSRF) protection bypass existed in the html_to_markdown expansion module of misp-modules.

The module attempts to prevent requests to loopback, private, link-local, and other restricted IP address ranges. However, IP addresses were compared against the blocked ranges without first normalising IPv4-mapped IPv6 addresses.

An authenticated attacker able to invoke the module could supply an IPv4-mapped IPv6 address, such as:

http://[::ffff:127.0.0.1]/ http://[::ffff:169.254.169.254]/

Alternatively, the attacker could use a hostname that resolves to an IPv4-mapped IPv6 address. These addresses were treated as IPv6 addresses and therefore did not match the corresponding blocked IPv4 ranges.

Successful exploitation could cause the misp-modules server to connect to services available through its loopback interface, internal network, or link-local network. This could expose internal web services, administrative interfaces, or cloud instance metadata, with retrieved content potentially returned to the attacker as converted Markdown.

The vulnerability has been addressed by normalising IPv4-mapped IPv6 addresses to their underlying IPv4 representation before applying the blocked-range checks. URLs without a valid hostname are now also rejected.

CVSS v3
8.3
EG Score
8.3(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity83% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

July 13, 2026

Last Modified

July 14, 2026

Advisory Details (1)

Auto-updated Jul 13, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
github_commit

commit 3bae4108a3ba (MISP/misp-modules)

Fix landed in MISP/misp-modules commit 3bae4108a3ba — awaiting tagged release

https://github.com/MISP/misp-modules/commit/3bae4108a3ba1e507727d5264697fd7303ba0b89

Vendor Advisories for CVE-2026-62143(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 57× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 197 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 05:08 UTCEG score recompute
  4. 2026-09-18 05:08 UTCGHSA enrichment
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-14 11:08 UTCGHSA enrichment
  8. 2026-09-13 23:35 UTCEG score recompute
  9. 2026-09-13 23:35 UTCGHSA enrichment
  10. 2026-09-13 08:04 UTCEG score recompute
  11. 2026-09-13 08:04 UTCGHSA enrichment
  12. 2026-09-12 13:30 UTCGHSA enrichment
  13. 2026-09-12 01:58 UTCEG score recompute
  14. 2026-09-12 01:58 UTCGHSA enrichment
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-11 09:37 UTCEPSS rescore
  17. 2026-09-08 22:01 UTCEPSS rescore
  18. 2026-09-08 02:13 UTCEG score recompute
  19. 2026-09-08 02:13 UTCGHSA enrichment
  20. 2026-09-07 16:01 UTCEPSS rescore
  21. 2026-09-06 13:52 UTCEG score recompute
  22. 2026-09-06 13:52 UTCGHSA enrichment
  23. 2026-09-06 13:47 UTCEPSS rescore
  24. 2026-09-05 21:29 UTCEG score recompute
  25. 2026-09-05 21:29 UTCGHSA enrichment
Show 75 more
  1. 2026-09-04 05:07 UTCEPSS rescore
  2. 2026-09-02 14:12 UTCEPSS rescore
  3. 2026-09-01 13:54 UTCEPSS rescore
  4. 2026-09-01 04:40 UTCEPSS rescore
  5. 2026-08-30 19:17 UTCEPSS rescore
  6. 2026-08-30 16:54 UTCGHSA enrichment
  7. 2026-08-30 05:41 UTCEG score recompute
  8. 2026-08-30 05:41 UTCGHSA enrichment
  9. 2026-08-30 01:22 UTCEPSS rescore
  10. 2026-08-28 21:42 UTCEPSS rescore
  11. 2026-08-28 02:36 UTCEG score recompute
  12. 2026-08-28 02:36 UTCGHSA enrichment
  13. 2026-08-27 14:25 UTCEPSS rescore
  14. 2026-08-27 14:11 UTCGHSA enrichment
  15. 2026-08-27 00:19 UTCEG score recompute
  16. 2026-08-27 00:19 UTCGHSA enrichment
  17. 2026-08-26 14:46 UTCEPSS rescore
  18. 2026-08-26 08:02 UTCGHSA enrichment
  19. 2026-08-25 19:19 UTCEG score recompute
  20. 2026-08-25 19:19 UTCGHSA enrichment
  21. 2026-08-25 13:49 UTCEPSS rescore
  22. 2026-08-25 07:47 UTCGHSA enrichment
  23. 2026-08-24 20:34 UTCEG score recompute
  24. 2026-08-24 20:34 UTCGHSA enrichment
  25. 2026-08-24 09:21 UTCGHSA enrichment
  26. 2026-08-23 19:59 UTCGHSA enrichment
  27. 2026-08-23 08:47 UTCEG score recompute
  28. 2026-08-23 08:47 UTCGHSA enrichment
  29. 2026-08-23 00:19 UTCEPSS rescore
  30. 2026-08-22 21:34 UTCGHSA enrichment
  31. 2026-08-22 10:22 UTCEG score recompute
  32. 2026-08-22 10:22 UTCGHSA enrichment
  33. 2026-08-21 23:49 UTCEPSS rescore
  34. 2026-08-21 23:08 UTCGHSA enrichment
  35. 2026-08-21 11:49 UTCGHSA enrichment
  36. 2026-08-20 23:47 UTCEG score recompute
  37. 2026-08-20 23:47 UTCGHSA enrichment
  38. 2026-08-20 22:55 UTCEPSS rescore
  39. 2026-08-20 12:35 UTCGHSA enrichment
  40. 2026-08-20 01:23 UTCEG score recompute
  41. 2026-08-20 01:23 UTCGHSA enrichment
  42. 2026-08-19 17:04 UTCEPSS rescore
  43. 2026-08-19 09:46 UTCGHSA enrichment
  44. 2026-08-18 22:21 UTCEG score recompute
  45. 2026-08-18 22:21 UTCGHSA enrichment
  46. 2026-08-18 13:48 UTCEPSS rescore
  47. 2026-08-18 10:32 UTCGHSA enrichment
  48. 2026-08-17 21:58 UTCEG score recompute
  49. 2026-08-17 21:58 UTCGHSA enrichment
  50. 2026-08-17 13:47 UTCEPSS rescore
  51. 2026-08-17 07:52 UTCGHSA enrichment
  52. 2026-08-16 20:40 UTCEG score recompute
  53. 2026-08-16 20:40 UTCGHSA enrichment
  54. 2026-08-16 14:56 UTCEPSS rescore
  55. 2026-08-16 09:27 UTCEG score recompute
  56. 2026-08-16 09:27 UTCGHSA enrichment
  57. 2026-08-15 22:16 UTCGHSA enrichment
  58. 2026-08-15 11:04 UTCEG score recompute
  59. 2026-08-15 11:04 UTCGHSA enrichment
  60. 2026-08-15 01:30 UTCEPSS rescore
  61. 2026-08-14 23:51 UTCGHSA enrichment
  62. 2026-08-14 12:39 UTCGHSA enrichment
  63. 2026-08-14 01:27 UTCEG score recompute
  64. 2026-08-14 01:27 UTCGHSA enrichment
  65. 2026-08-13 22:00 UTCEPSS rescore
  66. 2026-08-13 14:15 UTCGHSA enrichment
  67. 2026-08-13 03:03 UTCGHSA enrichment
  68. 2026-08-12 15:51 UTCEG score recompute
  69. 2026-08-12 15:51 UTCGHSA enrichment
  70. 2026-08-12 13:51 UTCEPSS rescore
  71. 2026-08-12 04:39 UTCGHSA enrichment
  72. 2026-08-11 17:27 UTCEG score recompute
  73. 2026-08-11 17:27 UTCGHSA enrichment
  74. 2026-08-11 06:06 UTCEG score recompute
  75. 2026-08-11 06:06 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2026-62143?
CVE-2026-62143 is a high vulnerability published on July 13, 2026. A Server-Side Request Forgery (SSRF) protection bypass existed in the htmltomarkdown expansion module of misp-modules. The module attempts to prevent requests to loopback, private, link-local, and other restricted IP address ranges. However, IP addresses were compared against the blocked ranges…
When was CVE-2026-62143 disclosed?
CVE-2026-62143 was first published in the National Vulnerability Database on July 13, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-62143 actively exploited?
CVE-2026-62143 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 65.5% of all scored CVEs.
What is the CVSS score of CVE-2026-62143?
CVE-2026-62143 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-62143?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62143, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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