CVE-2026-107705

Poppler 0.42.0 through 26.10.0 Stack Buffer Overflow via Decrypt::revision6Hash()

Published Oct 8, 2026 CVSS 4.0 · 8.3 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Ubuntu USN Ubuntu USN USN-8950-1 poppler vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Poppler 0.42.0 through 26.10.0 Stack Buffer Overflow via Decrypt::revision6Hash()
First Time appeared Freedesktop
Freedesktop poppler
Weaknesses CWE-121
CPEs cpe:2.3:a:freedesktop:poppler:*:*:*:*:*:*:*:*
Vendors & Products Freedesktop
Freedesktop poppler
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 14, 2026, 4:05 PM
Reserved
Oct 8, 2026, 4:52 PM
Status
Deferred
Published
Oct 8, 2026, 8:17 PM
Modified
Oct 14, 2026, 5:18 PM
Severity
Moderate
Public date
Oct 8, 2026, 7:51 PM