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…

EPSS: 0.002 (35.9th percentile) — read the EPSS interpretation.

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.

Affected products

Gotenberg — versions < 8.31.0
Thecodingmachine Gotenberg

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path
CWE-184 — Incomplete List of Disallowed Inputs

References

security-advisories@github.com (x_refsource_CONFIRM, 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.