Integer overflow in Freedesktop Poppler
CVE-2026-93311
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.006 (46.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Freedesktop Poppler — versions 26.07.0
Weakness classification (CWE)
References
- github.com/r1ck9-2q/cve_summit/blob/main/Shift-exponent-undefined-behavior-in-S… (exploit)
- gitlab.freedesktop.org/poppler/poppler/-/work_items/1758 (related)
- vuldb.com/cve/CVE-2026-93311 (third-party-advisory)
- vuldb.com/submit/942344 (third-party-advisory)
- vuldb.com/vuln/406609 (technical-description, vdb-entry)
- vuldb.com/vuln/406609/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-93311?
- CVE-2026-93311 is a medium-severity vulnerability in Freedesktop Poppler, classified under CWE-189. CVSS score: 4.3/10. Published 2026-09-18.
- How severe is CVE-2026-93311?
- Medium severity. CVSS v3 base score is 4.3 out of 10.