PatchTheCVECVE-2026-59941: Dompdf is an HTML to PDF converter for PHP
CVE-2026-59941 is a high-severity flaw (CVSS 7.5) affecting dompdf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Dompdf is an HTML to PDF converter for PHP. Versions 3.15 and prior accept a BMP image and generates a PDF-compatible PNG based only on its declared header dimensions and never bounds width × height before the image is converted through GD. A 58-byte BMP whose header declares e.g. 6000×6000 is accepted and later drives imagecreatetruecolor($width, $height) (and PHP's native BMP decoder) to allocate the full pixel canvas. A payload can fit in a si
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.6% (top 49%) |
| CISA exploited list | No |
| Weakness | CWE-400 |
| Published | 2026-07-28 |
| Last modified | 2026-08-04 |
Last updated 2026-08-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-59941?
dompdf: upgrade to 3.1.6. Exact commands for each OS are on this page.
Is CVE-2026-59941 being exploited?
CVE-2026-59941 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-59941 affect?
CVE-2026-59941 affects dompdf. Severity is high (CVSS 7.5). Dompdf is an HTML to PDF converter for PHP. Versions 3.15 and prior accept a BMP image and generates a PDF-compatible PNG based only on its declared header dimensions and never bounds width × height before the image is converted through GD.
How urgent is CVE-2026-59941?
Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action
Software pages
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