Open Redirect Vulnerability in Halo by Halo Dev
CVE-2026-91772

5.3MEDIUM

Key Information:

Vendor

Halo-dev

Status
Halo
Vendor
CVE Published:
15 September 2026

What is CVE-2026-91772?

An open redirect vulnerability exists in Halo version 2.26.1, specifically within the anonymous thumbnail endpoint. This flaw allows an attacker to manipulate the uri query parameter without proper validation. Consequently, they can create harmful links hosted on the Halo domain that direct users to arbitrary external websites. Such behavior facilitates phishing attacks that exploit user trust and can lead to potential data breaches or unauthorized access.

Affected Version(s)

halo 0 <= 2.26.1

References

https://github.com/halo-dev/halo/issues/10247
issue-tracking
https://github.com/halo-dev/halo/blob/v2.26.1/application...
technical-description
https://github.com/halo-dev/halo/blob/v2.26.1/application...
technical-description

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.