CVE-2026-93311 Details
Description
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.
A vulnerability in Freedesktop Poppler version 26.07.0 has been identified, specifically within the SampledFunction component. The issue arises in the SampledFunction constructor, located in poppler/Function.cc. Here, the BitsPerSample value is read from the PDF stream dictionary without proper validation, allowing for integer overflow. This vulnerability can be exploited remotely and is currently public knowledge.
Users are advised to validate and clamp the BitsPerSample value before it is used in shift operations. Poppler should also be updated to a version where this vulnerability is fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 18, 2026CISA-ADP
Assessed Sep 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/r1ck9-2q/cve_summit/blob/main/Shift-exponent-undefined-behavior-in-SampledFunction-Function.cc-376.md | [email protected] | ExploitTechnical Analysis |
| https://gitlab.freedesktop.org/poppler/poppler/-/work_items/1758 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://vuldb.com/cve/CVE-2026-93311 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/942344 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/406609 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/406609/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-189 | Numeric Errors | [email protected] |
| CWE-190 | Integer Overflow or Wraparound | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Freedesktop Poppler | 26.07.0 (semver) 26.08.90 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 22, 2026 | CVE Modified | CISA-ADP |
| Sep 18, 2026 | New CVE Received | [email protected] |