CVE-2025-61152_CVE-2025-61152

6.5 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Description

python-jose thru 3.3.0 allows JWT tokens with 'alg=none' to be decoded and accepted without any cryptographic signature verification. A malicious actor can craft a forged token with arbitrary claims (e.g., is_admin=true) and bypass authentication checks, leading to privilege escalation or unauthorized access in applications that rely on python-jose for token validation. This issue is exploitable unless developers explicitly reject 'alg=none' tokens, which is not enforced by the library.

Basic Information

ID CVE-2025-61152

Source mitre

Published Oct 10, 2025 at 00:00

Modified Oct 10, 2025 at 14:22

Affected Product

Vendor n/a

Product n/a

Version n/a

Affected Versions n/a n/a n/a

CWE Classification

CWE-269

References

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    "published": "2025-10-10T00:00:00.000Z",
    "modified": "2025-10-10T14:22:45.776Z",
    "type": "cve",
    "title": "CVE-2025-61152",
    "source": "mitre",
    "references": "https://pypi.org/project/python-jose\nhttps://github.com/javiermorales36/PoC-for-python-jose-alg-none-JWT-bypass-vulnerability/blob/main/CVE-2025-61152_Security_Advisory.md",
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