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01 Record

CVE-2026-27018

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

HighPUBLISHEDCNA: GitHub_M
CNA base score7.8 CVSS v4.0CVSS: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
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02 Description

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

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.70% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 77.0% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS: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
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-03-30 20:14Z7 MO AGO
Last updated
2026-03-31 14:16Z7 MO AGO
Reserved
2026-02-17
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 7.8)
CNA CVSS vector
CVSS: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
Weaknesses
  • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
  • CWE-918Server-Side Request Forgery (SSRF)Base
Data version
5.2
Document digest
e06cf73293a2b2f8a9732a353d14daabf605c7862450f6c32a7dd0d755b4330c

05 Affected products

VendorProductVersionsPlatforms
gotenberggotenberg< 8.29.0—

06 References