CVE-2026-107705
MEDIUMCVSS 6.5Description
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 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.
Timeline
Published:October 8th, 2026 8:17 PM
Last modified:October 14th, 2026 5:18 PM
CVSS Scoring
CVSS v3: 6.5 (MEDIUM)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
- https://gitlab.freedesktop.org/poppler/poppler
- https://gitlab.freedesktop.org/poppler/poppler/-/blob/poppler-26.10.0/poppler/Decrypt.cc#L1767
- https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/2398
- https://gitlab.freedesktop.org/poppler/poppler/-/work_items/1814
- https://www.vulncheck.com/advisories/poppler-0.42.0-through-26.10.0-stack-buffer-overflow-via-decrypt-revision6hash
Source: NIST NVD · Data may lag official sources by up to one minute