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CVE-2025-43856— immich allows account hijacking through oauth2

Quick assessment

Affected
immich-app immich
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.

immich是Immich开源的一个高性能自托管照片和视频管理解决方案。 immich 1.132.0之前版本存在安全漏洞，该漏洞源于未检查oauth2状态参数，可能导致账户劫持。

AI Predicted 8.1 Difficulty: Easy EPSS 0.38% · P29

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token
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I. Basic Information for CVE-2025-43856

Vulnerability Information
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Vulnerability Title
immich allows account hijacking through oauth2
Source: CVE Program / CVE List V5
Vulnerability Description
immich is a high performance self-hosted photo and video management solution. Prior to 1.132.0, immich is vulnerable to account hijacking through oauth2, because the state parameter is not being checked. The oauth2 state parameter is similar to a csrf token, so when the user starts the login flow this unpredictable token is generated and somehow saved in the browser session and passed to the identity provider, which will return the state parameter when redirecting the user back to immich. Before the user is logged in that parameter needs to be verified to make sure the login was actively initiated by the user in this browser session. On it's own, this wouldn't be too bad, but when immich uses the /user-settings page as a redirect_uri, it will automatically link the accounts if the user was already logged in. This means that if someone has an immich instance with a public oauth provider (like google), an attacker can - for example - embed a hidden iframe in a webpage or even just send the victim a forged oauth login url with a code that logs the victim into the attackers oauth account and redirects back to immich and links the accounts. After this, the attacker can log into the victims account using their own oauth credentials. This vulnerability is fixed in 1.132.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证算法的不正确实现
Source: CVE Program / CVE List V5
Vulnerability Title
immich 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
immich是Immich开源的一个高性能自托管照片和视频管理解决方案。 immich 1.132.0之前版本存在安全漏洞，该漏洞源于未检查oauth2状态参数，可能导致账户劫持。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
immich-app immich < 1.132.0 -

II. Public POCs for CVE-2025-43856

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III. Intelligence Information for CVE-2025-43856

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IV. Related Vulnerabilities

Same product: immich
Same vendor: immich-app
Same weakness: CWE-303

V. Comments for CVE-2025-43856

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