CVE-2026-32235
- Source
- https://cve.org/CVERecord?id=CVE-2026-32235
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32235.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-32235
- Aliases
- Downstream
- Published
- 2026-03-12T18:35:06.325Z
- Modified
- 2026-04-10T05:42:20.177173Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N CVSS Calculator
- Summary
- @backstage/plugin-auth-backend: OAuth redirect URI allowlist bypass
- Details
-
Backstage is an open framework for building developer portals. Prior to 0.27.1, the experimental OIDC provider in @backstage/plugin-auth-backend is vulnerable to a redirect URI allowlist bypass. Instances that have enabled experimental Dynamic Client Registration or Client ID Metadata Documents and configured allowedRedirectUriPatterns are affected. A specially crafted redirect URI can pass the allowlist validation while resolving to an attacker-controlled host. If a victim approves the resulting OAuth consent request, their authorization code is sent to the attacker, who can exchange it for a valid access token. This requires victim interaction and that one of the experimental features is explicitly enabled, which is not the default. This vulnerability is fixed in 0.27.1.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32235.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-601" ] }- References