CVE Tools
Sign in

CVE-2026-27018

Gotenberg: Chromium deny-list bypass via case-insensitive URL scheme

Published: Mar 30, 2026Updated: Apr 29, 2026 Sources: CVE List NVDCWE-22
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.5%
Top 59.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-22CWE-918

Affected Products

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

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

4 techniques
Collection
Command and Control
Discovery
Initial Access
View detailed technique mapping

References

https://github.com/gotenberg/gotenberg/security/advisories/GHSA-jjwv-57xh-xr6r
github.com
https://github.com/gotenberg/gotenberg/commit/06b2b2e10c52b58135edbfe82e94d599eb0c5a11
github.com
https://github.com/gotenberg/gotenberg/commit/8625a4e899eb75e6fcf46d28394334c7fd79fff5
github.com
and 1 more references View all →

Timeline

Published
Mar 30, 2026
Last Updated
Apr 29, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-27018 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows