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CVE-2026-91772— Halo through 2.26.1 Open Redirect via Unvalidated URI Parameter

Quick assessment

Affected
halo-dev halo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Halo 2.26.1 及更早版本在匿名缩略图端点中存在开放重定向漏洞，因为该端点未对 查询参数进行校验。攻击者可以构造指向任意外部网站的恶意链接（这些链接仍使用受信任的 Halo 域名），从而诱使访问者跳转至外部站点，进而实施钓鱼攻击，并滥用基于重定向的信任关系。

CVSS 6.1 · Medium

Possible ATT&CK Techniques 1 AI

T1565.002 · Transmitted Data Manipulation
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I. Basic Information for CVE-2026-91772

Vulnerability Information
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Vulnerability Title
Halo through 2.26.1 Open Redirect via Unvalidated URI Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
halo-dev halo 0 ~ 2.26.1 -

II. Public POCs for CVE-2026-91772

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III. Intelligence Information for CVE-2026-91772

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Patches & Fixes for CVE-2026-91772 (2)

Vendor Advisories for CVE-2026-91772 (1)

Other References for CVE-2026-91772 (1)

IV. Related Vulnerabilities

Same product: halo
Same vendor: halo-dev
Same weakness: CWE-601

V. Comments for CVE-2026-91772

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