What is CVE-2026-40893?

CVE-2026-40893 is a high-severity vulnerability in Gotenberg, classified under External Control of File Name or Path. CVSS score: 8.2/10. Published 2026-05-14.

How severe is CVE-2026-40893?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in Gotenberg

CVE-2026-40893

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, Gotenberg only checks if the tag is exactly FileName, so System:FileName slips right through and ExifTool happily renames the file. This allows remote attackers to move, rename, and change permissions for arbitrary files. This vulnerability is fixed in 8.31.0.

Published 2026-05-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L.

EPSS exploit prediction

EPSS: 0.005 (41.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002

Affected products

Gotenberg — versions < 8.31.0
Thecodingmachine Gotenberg

Weakness classification (CWE)

References

github.com/gotenberg/gotenberg/security/advisories/GHSA-62p3-hvxx-fxg4 (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-40893?: CVE-2026-40893 is a high-severity vulnerability in Gotenberg, classified under External Control of File Name or Path. CVSS score: 8.2/10. Published 2026-05-14.
How severe is CVE-2026-40893?: High severity. CVSS v3 base score is 8.2 out of 10.