CVE-2026-102270

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{"bugzilla": {"description": "pyjwt: pyjwt: Denial of Service via regular expression backtracking in is_pem_format", "id": "2542686", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2542686"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1333", "details": ["A flaw was found in PyJWT. An attacker can cause a Denial of Service (DoS) by providing crafted certificate-like input containing repeated start markers without matching end markers. This malformed input triggers excessive regular expression backtracking during validation in the is_pem_format function, consuming high central processing unit (CPU) resources and potentially making the application unresponsive."], "name": "CVE-2026-102270", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "jaeger", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "llvm21", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "swift-lang", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-09-28T20:29:24Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-102270\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-102270\nhttps://github.com/jpadilla/pyjwt/commit/8b4e233a22206b34ec1186e912e75c0b2396ac07\nhttps://github.com/jpadilla/pyjwt/releases/tag/2.14.0\nhttps://github.com/jpadilla/pyjwt/security/advisories/GHSA-jwrc-g2q2-pq5p"], "threat_severity": "Moderate"}

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