HOMEVULNERABILITIESCVE-2026-42591
HIGH

CVE-2026-42591

CWE-918Published: May 14, 2026· Updated: May 18, 2026

8.2
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:8.8th

Official Description

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the LibreOffice conversion endpoint (/forms/libreoffice/convert) passes uploaded documents directly to LibreOffice without inspecting their content. LibreOffice then fetches any embedded external URLs on its own, completely bypassing the SSRF filters. This vulnerability is fixed in 8.32.0.

NVD Source

Technical Analysis

CVE-2026-42591 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 8.2.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Affected Vendors & Products

thecodingmachine1 product
gotenberg
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/gotenberg/gotenberg/security/advisories/GHSA-rm4c-xj6x-49mw
ADVISORYhttps://github.com/gotenberg/gotenberg/security/advisories/GHSA-rm4c-xj6x-49mw

All References (2)

→
https://github.com/gotenberg/gotenberg/security/advisories/GHSA-rm4c-xj6x-49mwExploit · Vendor Advisory
→
https://github.com/gotenberg/gotenberg/security/advisories/GHSA-rm4c-xj6x-49mwExploit · Vendor Advisory

Quick Facts

CVE IDCVE-2026-42591
CVSS Score8.2 / 10
SeverityHIGH
WeaknessCWE-918
CISA KEVNo
EPSS (30d)0.03%
Affected1 vendor
PublishedMay 14, 2026

Related CVEs (CWE-918)

CVE-2026-13773
10.0
CVE-2026-26150
10.0
CVE-2026-26138
10.0
CVE-2026-32169
10.0
CVE-2026-35431
10.0
CVE-2026-2053
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-42591 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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