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CVE-2026-40893

Gotenberg: ExifTool Dangerous Tag Blocklist Bypass via Group-Prefixed Tag Names Allows Arbitrary File Rename and Move

Published: May 14, 2026Updated: May 18, 2026 Sources: CVE List NVDCWE-73
NVD MITRE
8.2CVSSHIGH
EPSS Score
0.3%
Top 73.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:LAvailability
Low
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Weaknesses

CWE-73CWE-184

Affected Products

gotenberggotenberg
On-prem
Cloud & SaaS / saas-application
gotenbergthecodingmachine
Mixed
Cloud & SaaS / api-gateway
gotenbergoss-projectCloud & SaaSaka gotenberg
thecodingmachineCloud & SaaSaka gotenberg

Exploitability

Official Patch Available

References

https://github.com/gotenberg/gotenberg/security/advisories/GHSA-62p3-hvxx-fxg4
github.com

Timeline

Published
May 14, 2026
Last Updated
May 18, 2026

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