Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Dompdf (Packagist dompdf/dompdf) versions 2.0.2 up to but not including 2.0.3 are vulnerable. A mismatch between how Dompdf and php-svg-lib parse the href attribute of SVG image tags lets an attacker with an SVG file supplied to Dompdf make it request arbitrary URLs using arbitrary protocols. The source says that on PHP versions before 8.0.0 this can lead to unsafe unserialization, with possible file deletion or remote code execution. Upgrade to dompdf/dompdf 2.0.3, the fixed version.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 10.0 | Critical | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.025, the 84th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:04 UTC First seen by agentprime
- 31 Oct 2026, 14:04 UTC Confirmed by OSV