CVE-2026-80229

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-06. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy handles. In OpenSSL 3 provider configurations, libcurl attaches an allocated library context to the easy handle's state and passes it to OpenSSL without acquiring an ownership reference; destroying the easy handle prematurely frees this context while the active connection retains a dangling pointer, leading to a heap-use-after-free upon subsequent I/O or post-handshake operations.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
57%
KEV
Not listed

Published

September 6, 2026

Last Modified

September 15, 2026

Advisory Details (3)

Auto-updated Sep 8, 2026
No patch confirmed yet.
generic

HackerOne

https://hackerone.com/reports/3969255
generic

curl - OpenSSL provider use-after-free - CVE-2026-80229

https://curl.se/docs/CVE-2026-80229.html
generic
https://curl.se/docs/CVE-2026-80229.json

Vendor Advisories for CVE-2026-80229(2)

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 / EcosystemFixed in / PatchReleasedSource
ubuntulibcurl4t64 (8.5.0-2ubuntu10.15) @ noble2026-09-25ubuntu

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

(4 across 4 ecosystems)
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
curl—8.22.0-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
curl—8.22.0-r0—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
curl8.14.1-2 ... 8.22.0~rc3-1+exp1 (79 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
curl8.14.1-2 ... 8.22.0~rc3-1+exp1 (73 versions)——

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 41× in last 7d / 104× 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 104 total refreshes for this CVE.

  1. 2026-09-25 09:54 UTCVendor advisory
  2. 2026-09-25 09:54 UTCGHSA enrichment
  3. 2026-09-24 21:56 UTCEG score recompute
  4. 2026-09-24 21:56 UTCVendor advisory
  5. 2026-09-24 21:56 UTCGHSA enrichment
  6. 2026-09-24 14:04 UTCEPSS rescore
  7. 2026-09-24 09:38 UTCVendor advisory
  8. 2026-09-24 09:38 UTCGHSA enrichment
  9. 2026-09-23 21:40 UTCEG score recompute
  10. 2026-09-23 21:40 UTCVendor advisory
  11. 2026-09-23 21:40 UTCGHSA enrichment
  12. 2026-09-23 17:54 UTCEPSS rescore
  13. 2026-09-23 09:42 UTCVendor advisory
  14. 2026-09-23 09:42 UTCGHSA enrichment
  15. 2026-09-22 21:44 UTCEG score recompute
  16. 2026-09-22 21:44 UTCVendor advisory
  17. 2026-09-22 21:44 UTCGHSA enrichment
  18. 2026-09-22 16:01 UTCEPSS rescore
  19. 2026-09-22 09:46 UTCVendor advisory
  20. 2026-09-22 09:46 UTCGHSA enrichment
  21. 2026-09-21 21:47 UTCEG score recompute
  22. 2026-09-21 21:47 UTCVendor advisory
  23. 2026-09-21 21:47 UTCGHSA enrichment
  24. 2026-09-21 21:09 UTCEPSS rescore
  25. 2026-09-21 09:49 UTCVendor advisory
Show 75 more
  1. 2026-09-21 09:49 UTCGHSA enrichment
  2. 2026-09-20 21:51 UTCEG score recompute
  3. 2026-09-20 21:51 UTCVendor advisory
  4. 2026-09-20 21:51 UTCGHSA enrichment
  5. 2026-09-20 20:16 UTCEPSS rescore
  6. 2026-09-20 09:53 UTCVendor advisory
  7. 2026-09-20 09:52 UTCGHSA enrichment
  8. 2026-09-19 21:54 UTCEG score recompute
  9. 2026-09-19 21:54 UTCVendor advisory
  10. 2026-09-19 21:54 UTCGHSA enrichment
  11. 2026-09-19 09:55 UTCVendor advisory
  12. 2026-09-19 09:55 UTCGHSA enrichment
  13. 2026-09-18 21:22 UTCEG score recompute
  14. 2026-09-18 21:22 UTCVendor advisory
  15. 2026-09-18 21:22 UTCGHSA enrichment
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-18 08:22 UTCVendor advisory
  18. 2026-09-18 08:22 UTCGHSA enrichment
  19. 2026-09-17 20:21 UTCEG score recompute
  20. 2026-09-17 20:21 UTCVendor advisory
  21. 2026-09-17 20:21 UTCGHSA enrichment
  22. 2026-09-17 07:25 UTCVendor advisory
  23. 2026-09-17 07:25 UTCGHSA enrichment
  24. 2026-09-16 19:26 UTCEG score recompute
  25. 2026-09-16 19:26 UTCVendor advisory
  26. 2026-09-16 19:26 UTCGHSA enrichment
  27. 2026-09-16 14:08 UTCEPSS rescore
  28. 2026-09-16 07:25 UTCEG score recompute
  29. 2026-09-16 07:25 UTCVendor advisory
  30. 2026-09-16 07:25 UTCGHSA enrichment
  31. 2026-09-16 05:15 UTCEPSS rescore
  32. 2026-09-15 19:27 UTCVendor advisory
  33. 2026-09-15 19:27 UTCGHSA enrichment
  34. 2026-09-15 07:28 UTCVendor advisory
  35. 2026-09-15 07:28 UTCGHSA enrichment
  36. 2026-09-15 06:39 UTCEG score recompute
  37. 2026-09-15 06:39 UTCVendor advisory
  38. 2026-09-15 06:39 UTCGHSA enrichment
  39. 2026-09-15 03:12 UTCEPSS rescore
  40. 2026-09-15 03:12 UTCEPSS rescore
  41. 2026-09-14 20:04 UTCVendor advisory
  42. 2026-09-14 20:04 UTCGHSA enrichment
  43. 2026-09-14 08:06 UTCVendor advisory
  44. 2026-09-14 08:06 UTCGHSA enrichment
  45. 2026-09-13 20:08 UTCEG score recompute
  46. 2026-09-13 20:08 UTCVendor advisory
  47. 2026-09-13 20:08 UTCGHSA enrichment
  48. 2026-09-13 08:09 UTCVendor advisory
  49. 2026-09-13 08:09 UTCGHSA enrichment
  50. 2026-09-12 20:12 UTCEG score recompute
  51. 2026-09-12 20:12 UTCVendor advisory
  52. 2026-09-12 20:12 UTCGHSA enrichment
  53. 2026-09-12 08:14 UTCVendor advisory
  54. 2026-09-12 08:14 UTCGHSA enrichment
  55. 2026-09-11 20:16 UTCVendor advisory
  56. 2026-09-11 20:16 UTCGHSA enrichment
  57. 2026-09-11 16:48 UTCEG score recompute
  58. 2026-09-11 16:48 UTCVendor advisory
  59. 2026-09-11 16:48 UTCGHSA enrichment
  60. 2026-09-11 14:53 UTCEPSS rescore
  61. 2026-09-11 14:53 UTCEPSS rescore
  62. 2026-09-11 04:49 UTCGHSA enrichment
  63. 2026-09-10 16:51 UTCEG score recompute
  64. 2026-09-10 16:51 UTCGHSA enrichment
  65. 2026-09-10 04:53 UTCGHSA enrichment
  66. 2026-09-09 16:55 UTCVendor advisory
  67. 2026-09-09 16:55 UTCGHSA enrichment
  68. 2026-09-09 04:48 UTCEG score recompute
  69. 2026-09-09 04:48 UTCGHSA enrichment
  70. 2026-09-08 22:01 UTCEPSS rescore
  71. 2026-09-08 16:50 UTCGHSA enrichment
  72. 2026-09-08 15:51 UTCEG score recompute▲ 7.50
  73. 2026-09-08 15:50 UTCGHSA enrichment
  74. 2026-09-08 15:49 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  75. 2026-09-08 15:01 UTCEG score recompute

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-80229?
CVE-2026-80229 is a high vulnerability published on September 6, 2026. When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy handles. In OpenSSL 3 provider configurations, libcurl attaches an allocated library context to the easy handle's state and passes it to OpenSSL without acquiring an ownership…
When was CVE-2026-80229 disclosed?
CVE-2026-80229 was first published in the National Vulnerability Database on September 6, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80229 actively exploited?
CVE-2026-80229 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 42.9% of all scored CVEs.
What is the CVSS score of CVE-2026-80229?
CVE-2026-80229 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-80229?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80229, 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.

Dependency Blast Radius

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