CVE-2026-91772
Medium
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.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Halo
PublishedSep 15, 2026
First seenSep 15, 2026
Weakness typeCWE-601Open redirect
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| halo-dev halo | v ≤ 2.26.1 | — |
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