CVE-2026-116072

Description

Infinity for Reddit through 8.3.4 contains a login cross-site request forgery vulnerability that allows attackers to log victims into an attacker-controlled account because the exported LoginChromeCustomTabActivity redirect handler checks a hardcoded OAuth state value. Attackers can authorize the app's client ID with their own Reddit account, then deliver an infinity://localhost redirect containing their code and the constant state, causing the victim's posts, messages, and browsing to occur on the attacker's account.

References

https://www.vulncheck.com/advisories/infinity-for-reddit-through-8.3.4-oauth-login-csrf-via-loginchromecustomtabactivity

https://github.com/Docile-Alligator/Infinity-For-Reddit/issues/1975

https://github.com/Docile-Alligator/Infinity-For-Reddit/blob/v8.3.4/app/src/main/java/ml/docilealligator/infinityforreddit/utils/APIUtils.java#L43

https://github.com/Docile-Alligator/Infinity-For-Reddit/blob/v8.3.4/app/src/main/java/ml/docilealligator/infinityforreddit/activities/LoginChromeCustomTabActivity.java#L194-L205

https://github.com/Docile-Alligator/Infinity-For-Reddit/blob/v8.3.4/app/src/main/AndroidManifest.xml#L75-L92

https://github.com/Docile-Alligator/Infinity-For-Reddit

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4