{"id":"CVE-2025-3757","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-3757","generatedAt":"2026-10-28T01:49:53.667Z","title":"Versions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.","description":"Versions of OpenPubkey library prior to 0.10.0  contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.","published":"2025-05-13T17:16:04.000Z","lastModified":"2026-06-17T09:20:37.000Z","status":"Analyzed","sourceIdentifier":"cna@cloudflare.com","cvss":{"version":"4.0","score":9.3,"severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-305","CWE-347"],"affected":["openpubkey/openpubkey"],"epss":{"score":0.00427,"percentile":0.367,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/openpubkey/openpubkey","tags":["Product"],"source":"cna@cloudflare.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-3757","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}