Answer in brief
CVE-2026-32597 records a High severity (CVSS 7.5) vulnerability in PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation). The current sources do not mark it as known exploited. The current feed maps jpadilla/pyjwt (generic), PyJWT (pip). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-32597 records a High severity (CVSS 7.5) vulnerability in PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation). The current sources do not mark it as known exploited. The current feed maps jpadilla/pyjwt (generic), PyJWT (pip). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps jpadilla/pyjwt (generic), PyJWT (pip). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| jpadilla/pyjwtgeneric | < 2.12.0 | Not reported |
| PyJWTpip | <=2.11.0 | 2.12.0 |
Published upstream
Mar 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 11, 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 it. This violates the MUST requirement in the RFC. This vulnerability is fixed in 2.12.0.
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps jpadilla/pyjwt (generic), PyJWT (pip). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| jpadilla/pyjwtgeneric | < 2.12.0 | Not reported |
| PyJWTpip | <=2.11.0 | 2.12.0 |
Published upstream
Mar 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 11, 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 it. This violates the MUST requirement in the RFC. This vulnerability is fixed in 2.12.0.
Quoted source text, attributed separately from HOL analysis.