Answer in brief
CVE-2024-33663 records a High severity (CVSS 7.4) vulnerability in python-jose through 3.5.0 Algorithm Confusion via DER-encoded Public Key as HMAC Secret. The current sources do not mark it as known exploited. The current feed maps mpdavis/python-jose (generic), python-jose (pypi). 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 7.4. 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 mpdavis/python-jose (generic), python-jose (pypi). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| mpdavis/python-josegeneric | 0 | Not reported |
| python-josepypi | >=0 <3.4.0 | 3.4.0 |
Published upstream
Sep 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 3, 2026
python-jose through 3.5.0 fails to properly validate asymmetric keys in HMAC initialization, accepting DER-encoded public keys that lack PEM armor or SSH prefixes. Attackers holding the service's public key can forge HS256 tokens that pass verification when algorithms are not explicitly restricted. This is an incomplete fix for CVE-2024-33663.
Quoted source text, attributed separately from HOL analysis.