CVE-2026-91165
- Source
- https://cve.org/CVERecord?id=CVE-2026-91165
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91165.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-91165
- Aliases
-
- GHSA-vvpj-p7j8-4rv4
- Published
- 2026-09-21T18:53:03Z
- Modified
- 2026-09-23T03:47:29Z
- Severity
-
- 2.4 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- Warpgate: Markup injection in SSO form_post return page via unencoded redirect/error values
- Details
-
Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. Prior to 0.27.6, the response_mode=form_post SSO return path in warpgate-protocol-http/src/api/sso_provider_list.rs uses serde_json::to_string inside ReturnToSsoPostResponse without neutralizing a script-closing sequence. The vulnerable value can enter the script block through the attacker-controlled next redirect parameter stored by warpgate-protocol-http/src/api/sso_provider_detail.rs or through IdP-derived error messages that make_redirect_url concatenates without URL encoding. The IdP-derived path is reachable when the attacker controls a configured identity provider, or when the attacker controls the email or username claim on an attacker-controlled account and the configured identity provider permits the required unvalidated claim format. A victim must complete the form_post SSO flow for the injected markup to be rendered. The Warpgate Content-Security-Policy blocks injected JavaScript and event handlers, so the demonstrated impact is content spoofing, a false login form, or a meta refresh rather than script execution. This issue is fixed in version 0.27.6.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-79" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91165.json" }- References
-
- https://github.com/warp-tech/warpgate/releases/tag/v0.27.6
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91165.json
- https://github.com/warp-tech/warpgate/security/advisories/GHSA-vvpj-p7j8-4rv4
- https://nvd.nist.gov/vuln/detail/CVE-2026-91165
- https://github.com/warp-tech/warpgate/commit/e94425a08f501383a67316673749dcbd637c6ce3