CVE-2026-58491
NVD: Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. NVD: Prior to 0.25.5, the /@warpgate/api/sso/providers/:name/start endpoint stores an attacker-controlled next parameter that the POST /@warpgate/api/sso/return handler inserts without HTML escaping into the response generated by... NVD: A victim who follows a crafted link and completes SSO can cause markup and JavaScript to execute in the authenticated Warpgate origin, allowing access to session data and actions through user APIs, and through administrator APIs only when the victim is an...
9.3 Severity
CRITICAL EPSS
0.0000 (0) KEV
-
Source-published summary
NVD: Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. NVD: Prior to 0.25.5, the /@warpgate/api/sso/providers/:name/start endpoint stores an attacker-controlled next parameter that the POST /@warpgate/api/sso/return handler inserts without HTML escaping into the response generated by... NVD: A victim who follows a crafted link and completes SSO can cause markup and JavaScript to execute in the authenticated Warpgate origin, allowing access to session data and actions through user APIs, and through administrator APIs only when the victim is an...
Possible impact
Source describes XSS risk. Possible impact: This critical severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for XSS risk.
Affected context
Affected product or version requires source confirmation.
Remediation / advisory
Patch confirmed by source text; fixed version context: 0.25.5..
Why it matters
Source describes XSS risk. Possible impact: This critical severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for XSS risk.; CVSS 9.3 (CRITICAL); not listed in KEV; Patch confirmed by source text; fixed version context: 0.25.5; sources: NVD, OSV.
What to verify
Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.
Exposure hint
exposure unknown
Impact tags
Urgency reasons
Source-derived note
Summary derived from NVD / OSV description; unsafe procedural detail is not shown.
Redaction metadata
- source summary used
- True
- fallback summary used
- False
- unsafe procedural detail present
- false
- raw source displayed
- false
- public summary redacted
- true
Remediation handoff
Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.
Safety note
This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.