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Fencer Vulns
medium 4.3

CVE-2026-93311 json

Freedesktop Poppler SampledFunction Function.cc integer overflow

published 2026-09-18 52 d ago modified 2026-09-22 48 d ago also EUVD-2026-82612

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

A vulnerability was detected in Freedesktop Poppler 26.07.0. This issue affects the function SampledFunction::SampledFunction of the file poppler/Function.cc of the component SampledFunction. The manipulation of the argument BitsPerSample results in integer overflow. The attack may be performed from remote. The exploit is now public and may be used. The project was informed of the problem early through a bug report but has not responded yet.

Patch / fix

  • poppler Debian 14 26.07.0-4

debian advisories DEBIAN-CVE-2026-93311

  • poppler hummingbird 1 26.08.0-1.5.hum1
  • poppler-cpp hummingbird 1 26.08.0-1.5.hum1
  • poppler-qt6 hummingbird 1 26.08.0-1.5.hum1
  • poppler-glib hummingbird 1 26.08.0-1.5.hum1
  • poppler-utils hummingbird 1 26.08.0-1.5.hum1

red hat advisories RHSA-2026:82452

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-93311 updated cvss 6.5

poppler: Freedesktop Poppler: Denial of service via integer overflow in SampledFunction

  • Red Hat Hardened Images poppler 26.08.0-1.5.hum1, poppler-cpp 26.08.0-1.5.hum1, poppler-qt6 26.08.0-1.5.hum1, poppler-glib 26.08.0-1.5.hum1, poppler-utils 26.08.0-1.5.hum1
    fixed: vendor fix RHSA-2026:82452
  • Red Hat Enterprise Linux 6 poppler, poppler-qt, poppler-qt4, poppler-glib, poppler-utils Red Hat Enterprise Linux 7 poppler, poppler-qt, poppler-cpp, poppler-glib, poppler-demos, poppler-utils, +4 more Red Hat Enterprise Linux 8 poppler, poppler-cpp, poppler-qt5, poppler-glib, poppler-utils Red Hat Enterprise Linux 9 poppler, poppler-cpp, poppler-qt5, poppler-glib, poppler-utils Red Hat Enterprise Linux 10 poppler
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
48 d ago

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/r1ck9-2q/cve_summit/blob/main/Shift-exponent-undefined-behavior-in-SampledFunction-Function.cc-376.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
CNA 3.0 4.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
CNA 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR
CNA 4.0 2.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CNA 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • Freedesktop Poppler

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.