{"id":"CVE-2026-102996","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102996","generatedAt":"2026-10-28T01:00:53.852Z","title":"pypdf is a free and open-source pure-python PDF library.","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can provide a TrueType or Type1 simple font with an unusually large /Widths array, causing pypdf/_font.py Font._collect_tt_t1_character_widths to process entries beyond the 256 character codes meaningful for a simple font and consume excessive memory during operations such as text extraction. This issue is fixed in version 6.18.1.","published":"2026-09-30T21:17:07.000Z","lastModified":"2026-10-05T15:13:17.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-400"],"affected":["pypdf project/pypdf"],"epss":{"score":0.0034,"percentile":0.2731,"date":"2026-10-26","history":[{"date":"2026-10-01","score":0.00524,"percentile":0.42322}]},"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 (0.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-30T21:17:07.000Z","detail":{"score":"8.7","severity":"HIGH","publishedAt":"2026-09-30T21:17:06.863Z"},"summary":"New CVE, high severity (CVSS 8.7)."}],"references":[{"url":"https://github.com/py-pdf/pypdf/commit/0fb26eb8cdd01c44b3b2c9fe8329751be2f7cfd5","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/pull/4072","tags":["Patch","Issue Tracking"],"source":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.18.1","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-g9cg-prrw-2r8q","tags":["Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102996","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."}