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5.3
Talishar: Any User Can Access Game Features Without Logging In
CVE-2026-28428
Summary
An attacker can send game actions without logging in. This means that anyone can send messages and make game moves without being a registered user. This issue has been fixed in a recent update, so you should make sure you're running the latest version.
Original title
Talishar is a fan-made Flesh and Blood project. Prior to commit a9c218e, an authentication bypass vulnerability in Talishar's game endpoint validation logic allows any unauthenticated attacker to p...
Original description
Talishar is a fan-made Flesh and Blood project. Prior to commit a9c218e, an authentication bypass vulnerability in Talishar's game endpoint validation logic allows any unauthenticated attacker to perform authenticated game actions — including sending chat messages and submitting game inputs — by supplying an empty authKey parameter (authKey=). The server-side validation uses a loose comparison that accepts an empty string as a valid credential, while correctly rejecting non-empty but incorrect keys. This asymmetry means the authentication mechanism can be completely bypassed without knowing any valid token. This issue has been patched in commit a9c218e.
nvd CVSS3.1
5.3
Vulnerability type
CWE-287
Improper Authentication
Published: 6 Mar 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026