CVE-2026-32597

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 81% 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
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

PyJWT is a JSON Web Token implementation in Python. Prior to 2.12.0, PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting it. This violates the MUST requirement in the RFC. This vulnerability is fixed in 2.12.0.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

March 13, 2026

Last Modified

July 22, 2026

Advisory Details (2)

Auto-updated May 6, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

PyJWT accepts unknown `crit` header extensions · Advisory · jpadilla/pyjwt · GitHub

https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f
generic Patch Available

[SECURITY] [DLA 4564-1] pyjwt security update

https://lists.debian.org/debian-lts-announce/2026/05/msg00008.html

Vendor Advisories for CVE-2026-32597(20)

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

Patch Availability(27)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupython3-jwt (1.3.0-1ubuntu0.1+esm1) @ xenial2026-06-12ubuntu
redhatrhoai/odh-vllm-gaudi-rhel9:17800690692026-06-10redhat
redhatfence-agents-0:4.10.0-43.el9_2.212026-06-01redhat
redhatfence-agents-0:4.10.0-62.el9_4.242026-05-28redhat
redhatfence-agents-0:4.10.0-86.el9_6.162026-05-27redhat
redhatrhoai/odh-vllm-gaudi-rhel9:17786001872026-05-20redhat
redhatfence-agents-0:4.10.0-110.el9_8.22026-05-19redhat
redhatquay/quay-rhel9:17792040862026-05-19redhat
redhatfence-agents-0:4.16.0-21.el10_2.12026-05-19redhat
redhatfence-agents-0:4.16.0-5.el10_0.92026-05-13redhat
redhatfence-agents-0:4.16.0-13.el10_1.42026-05-06redhat
redhatfence-agents-0:4.10.0-98.el9_7.122026-05-05redhat
redhatansible-automation-platform-25/lightspeed-rhel8:17774038722026-05-04redhat
redhatansible-automation-platform-26/mcp-tools-rhel9:17773116012026-05-04redhat
redhatpython3.12-pyjwt-0:2.12.1-1.el9ap2026-05-04redhat
redhatfence-agents-0:4.2.1-129.el8_10.252026-04-30redhat
redhatrhelai3/disk-image-cuda-rhel9:17769388712026-04-23redhat
redhatrhelai3/bootc-rocm-rhel9:17767735052026-04-23redhat
redhatrhoai/odh-kserve-storage-initializer-rhel9:17763431112026-04-23redhat
redhatrhaiis/vllm-rocm-rhel9:17756802622026-04-17redhat
redhatrhaiis/vllm-cuda-rhel9:17756801922026-04-17redhat
redhatrhaiis/model-opt-cuda-rhel9:17757498572026-04-17redhat
redhatrhtas/model-transparency-rhel9:17758154072026-04-16redhat
redhatquay/quay-rhel8:17751691552026-04-07redhat
redhatquay/quay-rhel8:17751692182026-04-07redhat
redhatquay/quay-rhel8:17752530922026-04-06redhat
redhatquay/quay-rhel8:17751692192026-04-03redhat

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 rangeFixed inDependents
pyjwt0.1.1 ... 2.9.0 (52 versions)2.12.0—

Weakness Classification(3)

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

Additional Vendor Advisories

(8)

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 14× in last 7d / 51× 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 127 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-32597?
CVE-2026-32597 is a high vulnerability published on March 13, 2026. PyJWT is a JSON Web Token implementation in Python. Prior to 2.12.0, PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting…
When was CVE-2026-32597 disclosed?
CVE-2026-32597 was first published in the National Vulnerability Database on March 13, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-32597 actively exploited?
CVE-2026-32597 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 81.2% of all scored CVEs.
What is the CVSS score of CVE-2026-32597?
CVE-2026-32597 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-32597?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-32597, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-32597

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