Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
veraPDF CLI and the org.verapdf Maven packages (core, library and related artifacts) before 1.26.2 are affected. Running policy checks with custom Schematron files can invoke an XSL transformation that may theoretically lead to remote code execution. The source gives few details on who can trigger it, and no fixed version is listed; the source says a patch is in progress. Standard validation is not affected, and users should only load custom policy files from trusted sources.
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 |
|---|---|---|---|---|
| 2.3 | Low | 4.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.011, the 66th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:20 UTC First seen by agentprime
- 31 Oct 2026, 14:20 UTC Confirmed by OSV