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Medium · 6.1 CVE-2026-91772 EUVD-2026-78248GHSA-fvx2-w6cp-9mrg

Halo through 2.26.1 Open Redirect via Unvalidated URI Parameter

Published Sep 15, 2026 · Updated Sep 24, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
halo-dev halo ≤ 2.26.1 —

References