Vulnerability · Published Oct 25, 2026 · Assigned by VulnCheck
CVE-2026-116072Infinity for Reddit through 8.3.4 OAuth Login CSRF via LoginChromeCustomTabActivity
Medium 5.4
In plain English
A medium-severity cross-site request forgery in Infinity for Reddit from Docile-Alligator. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Docile-Alligator | Infinity for Reddit | 0 – through 8.3.4 |
Weakness: CWE-352 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
References
- GitHub Issue #1975 issue-tracking
- https://github.com/Docile-Alligator/Infinity-For-Reddit product
- https://github.com/Docile-Alligator/Infinity-For-Reddit/blob/v8.3.4/app/src/main/java/ml/docilealligator/infinityforreddit/activities/LoginChromeCustomTabActivity.java#L194-L205 technical-description
- https://github.com/Docile-Alligator/Infinity-For-Reddit/blob/v8.3.4/app/src/main/java/ml/docilealligator/infinityforreddit/utils/APIUtils.java#L43 technical-description
- https://github.com/Docile-Alligator/Infinity-For-Reddit/blob/v8.3.4/app/src/main/AndroidManifest.xml#L75-L92 technical-description
- VulnCheck Advisory: Infinity for Reddit through 8.3.4 OAuth Login CSRF via LoginChromeCustomTabActivity third-party-advisory