- Description
- PyJWT is a Python implementation of JSON Web Token standards. From 2.11.0 through 2.13.0, PyJWT's PyJWT._merge_options() method can modify a caller-supplied mutable options mapping when verify_signature is false. If an application reuses that same mapping for a later decode() or decode_complete() call and changes verify_signature to true, the mapping can retain false values for expiration, not-before, issued-at, audience, issuer, subject, and JWT ID checks. A signed token with invalid registered claims can then be accepted without disabling signature verification, but applications that create a fresh options mapping for each call are not affected.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
- Products
- pyjwt
CVSS 3.1
- Type
- Secondary
- Base score
- 6.5
- Impact score
- 4.2
- Exploitability score
- 2.2
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
- Severity
- MEDIUM
- security-advisories@github.com
- CWE-471
- Hype score
- Not currently trending
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"versionEndExcluding": "2.13.0",
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"negate": false,
"operator": "OR"
}
]
}
]