{"id":"CVE-2026-107705","title":"Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs","summary":"Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a passw…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","cwe":["CWE-121"],"published":"2026-10-08","updated":"2026-10-08","sourceUpdated":"2026-10-08T21:35:53.890","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107705","references":[{"url":"https://gitlab.freedesktop.org/poppler/poppler","label":"disclosure@vulncheck.com"},{"url":"https://gitlab.freedesktop.org/poppler/poppler/-/blob/poppler-26.10.0/poppler/Decrypt.cc#L1767","label":"disclosure@vulncheck.com"},{"url":"https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/2398","label":"disclosure@vulncheck.com"},{"url":"https://gitlab.freedesktop.org/poppler/poppler/-/work_items/1814","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/poppler-0.42.0-through-26.10.0-stack-buffer-overflow-via-decrypt-revision6hash","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-08T21:07:56.435Z","slug":"CVE-2026-107705","body":"## Overview\n\nPoppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}