CVE-2026-27018

Aliases:GHSA-jjwv-57xh-xr6rGO-2026-4905
Advisory lineage Upstream: 0 Downstream: 1
Analyzed
Published: 30 Mar 2026, 20:14
Last modified:31 Mar 2026, 14:16

Vulnerability Summary

Overall Risk (default)
medium
41/100
CVSS Score
7.8 HIGH
v4.0 (cve.org)
EPSS Score
0.03% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

30 Mar 2026, 20:14
Published
Vulnerability first disclosed
31 Mar 2026, 14:16
Last Modified
Vulnerability information updated

Description

Gotenberg is an API for converting document formats. Prior to version 8.29.0, the fix introduced for CVE-2024-21527 can be bypassed using mixed-case or uppercase URL schemes. This issue has been patched in version 8.29.0.

CVSS Metrics

  • v4.0•HIGH•Score: 8.8CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
  • v4.0•HIGH•Score: 7.8CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Trends

Current EPSS score: 0.03%• Percentile: 10%

Techniques & Countermeasures

  • CWE-22•Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

    The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

  • CWE-918•Server-Side Request Forgery (SSRF)

    The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Affected Systems

  • github.com/gotenberg/gotenberg•v7

    all | ≤ 7.10.2

  • github.com/gotenberg/gotenberg•v8

    < 8.29.0

  • gotenberg•gotenberg

    < 8.29.0

  • thecodingmachine•gotenberg

    < 8.29.0

References (7)