CVE-2026-93653: A denial of service flaw was found in Poppler's Splash backend
Affects popplerSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 8 Nov 2026, 23:24 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 5.5 |
|---|
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
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), 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 vendor advisories for updates and consider restricting untrusted PDF rendering until a fix is available.
Description
A denial of service vulnerability (CVE-2026-93653) exists in Poppler's Splash backend. A crafted PDF with specific tiling-pattern geometry can cause an unbounded CPU loop, resulting in 100% CPU usage for an extended period. This flaw is due to an attacker-controlled repeat count in the pattern-fill routine without proper memory allocation. It affects various specific versions of Poppler used in Ubuntu distributions. The vulnerability has a medium severity score of 5.5 and does not impact confidentiality or integrity but causes availability disruption.