CVE-2026-90453
A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. This allows an authenticated attacker to craft a request that causes another user's browser to be redirected to an arbitrary external destination after completing an upload.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.1
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- CWE
- CWE-601
- Published
- 2026-09-11
- Last modified
- 2026-09-11
Affected products
- CISA Malcolm
- CISA Malcolm
Weakness type
Related vulnerabilities
- CVE-2026-81913 — Concrete CMS versions 9.5.0 through 9.5.2 are vulnerable to Open Redirect via the rcURL parameter.
- CVE-2026-54072 — Authorizer: Unvalidated redirect_uri in /authorize leaks OAuth2 tokens to attacker-controlled URL
- CVE-2026-88887 — Renovate before 44.11.2 Credential Exfiltration via Link Header
- CVE-2026-88882 — Renovate before 44.11.2 Credential Exfiltration via Link Header
- CVE-2026-88881 — Renovate before 44.11.3 Credential Exfiltration via Link Header
- CVE-2026-88880 — Renovate before 44.11.3 Credential Exfiltration via Link Header
- CVE-2026-8323 — Open Redirect in Armiya Information Technologies' Access Control System
- CVE-2026-86756 — Snipe-IT 8.5.0 through 8.6.3 Open Redirect via SAML RelayState