Is CVE-2026-91772 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-91772?

CVE-2026-91772 has a CVSS v3 severity of MEDIUM (6.1).

Back

CVE-2026-91772

Description

Halo through 2.26.1 contains an open redirect vulnerability in the anonymous thumbnail endpoint that fails to validate the uri query parameter. Attackers can craft malicious links on the trusted Halo domain that redirect visitors to arbitrary external sites, enabling phishing attacks and abuse of redirect-based trust relationships.