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Vulnerability · Published Oct 8, 2026 · Assigned by VulnCheck

CVE-2026-107705Poppler 0.42.0 through 26.10.0 Stack Buffer Overflow via Decrypt::revision6Hash()

Medium 6.5

In plain English

A medium-severity stack buffer overflow in poppler from freedesktop. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 74.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12popplerno fix listedDEBIAN-CVE-2026-107705
Debian:13popplerno fix listedDEBIAN-CVE-2026-107705
Debian:14popplerno fix listedDEBIAN-CVE-2026-107705
Ubuntu:22.04:LTSpoppler22.02.0-2ubuntu0.15USN-8950-1
Ubuntu:22.04:LTSpoppler22.02.0-2ubuntu0.15UBUNTU-CVE-2026-107705
Ubuntu:24.04:LTSpoppler24.02.0-1ubuntu9.11UBUNTU-CVE-2026-107705
Ubuntu:24.04:LTSpoppler24.02.0-1ubuntu9.11USN-8950-1
Ubuntu:26.04:LTSpoppler26.01.0-2ubuntu0.3UBUNTU-CVE-2026-107705
Ubuntu:26.04:LTSpoppler26.01.0-2ubuntu0.3USN-8950-1
Ubuntu:26.10poppler26.07.0-2ubuntu1.1UBUNTU-CVE-2026-107705
Ubuntu:26.10poppler26.07.0-2ubuntu1.1USN-8950-1

Affected products (as reported)

VendorProductVersions
freedesktop poppler 0.42.0 – through 26.10.0

Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

References