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CVE-2026-48526 PyJWT: Public-key JWK accepted as HMAC secret enables forged HS256 tokens when mixed families are allowed

🗓️ 28 May 2026 15:09:09Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 32 Views

PyJWT CVE-2026-48526 allowed public-key JWK as HMAC secret, enabling forged HS256 tokens.

Related
Affected
Refs
[
  {
    "vendor": "jpadilla",
    "product": "pyjwt",
    "versions": [
      {
        "version": "< 2.13.0",
        "status": "affected"
      }
    ]
  }
]

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28 May 2026 15:09Current
CVSS 3.17.4
EPSS0.00198
32