CVE-2026-93311: Freedesktop Poppler
Affects popplerSource GCVE Database
Public exploit available · CVSS 5.3 Medium.
Data as of 8 Nov 2026, 23:24 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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:PExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10popplerpkg:deb/ubuntu/poppler?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSpopplerpkg:deb/ubuntu/poppler?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSpopplerpkg:deb/ubuntu/poppler?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSpopplerpkg:deb/ubuntu/poppler?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu Pro 20.04 LTSpopplerpkg:deb/ubuntu/poppler?arch=source&distro=esm-infra/focalOther threats | Affected
| Fixed in– |
Ubuntu Pro 18.04 LTSpopplerpkg:deb/ubuntu/poppler?arch=source&distro=esm-infra/bionicOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should monitor the vendor's advisory for updates. Until a patch is available, consider applying workarounds if any are provided by the vendor or restrict exposure of vulnerable Poppler versions to untrusted inputs. Avoid processing untrusted PDF files with affected Poppler versions.
Description
CVE-2026-93311 is a medium severity integer overflow vulnerability in Freedesktop Poppler version 26.07.0 affecting the SampledFunction::SampledFunction function in poppler/Function.cc. The flaw is caused by manipulation of the BitsPerSample argument. This vulnerability can be exploited remotely, and public exploit code is available. Multiple specific Ubuntu package versions of Poppler are affected. The project has been notified but has not yet issued a fix.
References
- ubuntu.com/security/CVE-2026-93311 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-93311 (opens in a new tab)
- gitlab.freedesktop.org/poppler/poppler/-/work_items/1758 (opens in a new tab)
- github.com/r1ck9-2q/cve_summit/blob/main/Shift-exponent-undefined-behavior-in-SampledFunction-Function.cc-376.md (opens in a new tab)
- vuldb.com/cve/CVE-2026-93311 (opens in a new tab)
- vuldb.com/submit/942344 (opens in a new tab)
- vuldb.com/vuln/406609 (opens in a new tab)
- vuldb.com/vuln/406609/cti (opens in a new tab)