Severity:
HIGH RISK
(7.2)
Path Traversal (CWE-22) in Discourse Iframe URL Guard
CVE-2026-91123
Deferred
Vulnerability Type
Category:
Path Traversal
CWE:
CWE-22
Impact:
Iframe Allowlist Bypass and Unauthorized Content Loading
Severity:
HIGH RISK
(7.2)
CVSS Version:
3.1
Catch This CVE While Code Is Being Written
Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.
Summary
Affected Context
Exploit Preconditions
Why This Happens
Potential Impact
General Mitigation Guidance
How Teams Detect Issues Like This
Frequently Asked Questions
Source
NDV
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