Saurus CMS Unauthenticated Open Redirect via logout url parameter (CVE-2026-73671) | HOL Guard CVE

Medium · CVSS 6.1CVE-2026-73671

Saurus CMS Unauthenticated Open Redirect via logout url parameter

Answer in brief

CVE-2026-73671 records a Medium severity (CVSS 6.1) vulnerability in Saurus CMS Unauthenticated Open Redirect via logout url parameter. The current sources do not mark it as known exploited. The current feed maps Saurus/Saurus CMS Community Edition (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 13, 2026Updated Aug 31, 2026Source checked Sep 27, 2026First seen by HOL Aug 13, 2026Material review Aug 31, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.1
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 6.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Saurus/Saurus CMS Community Edition (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Saurus/Saurus CMS Community Editiongeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Saurus/Saurus CMS Community Edition.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 13, 2026

Sources and claim methodology

Upstream source description

Saurus CMS Community Edition contains an unauthenticated open redirect vulnerability in the logout handling code in classes/port.inc.php, where the url parameter supplied via GET or POST is passed directly to the Location header without domain allowlist, scheme validation, or relative path enforcement. Attackers can craft a malicious logout URL containing an arbitrary external domain or javascript: URI scheme to redirect authenticated users to attacker-controlled phishing pages after session destruction, enabling credential theft and OAuth redirect abuse.

Quoted source text, attributed separately from HOL analysis.