CVE-2026-91772
mediumHalo through 2.26.1 contains an open redirect vulnerability in the anonymous thumbnail endpoint that fails to validate the uri query parameter.
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.
CVSS
6.1
6.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-09-15 02:16
Modified: 2026-09-23 17:17
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-27 06:53 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/halo-dev/halo disclosure@vulncheck.com
- https://github.com/halo-dev/halo/blob/v2.26.1/application/src/main/java/run/halo/app/core/... disclosure@vulncheck.com
- https://github.com/halo-dev/halo/blob/v2.26.1/application/src/main/resources/extensions/ro... disclosure@vulncheck.com
- https://github.com/halo-dev/halo/issues/10247 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/halo-through-2.26.1-open-redirect-via-unvalidated-uri... disclosure@vulncheck.com
- https://github.com/halo-dev/halo/issues/10247 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:53 UTC · record ↗