CVE-2026-28428
Medium · 5.3CVSS
5.3
EPSS
0.4%
Published
Mar 6, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-114638 Traefik v3.7.0 before v3.7.14 contains an improper authentication vulnerability in the… CWE-287
- CVE-2026-114639 Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 contains an authentication bypass… CWE-287
- CVE-2026-112104 A flaw has been found in eremef bandcamp-player up to 1.8.33-beta. CWE-287
- CVE-2026-107228 The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP… CWE-287
- CVE-2026-86781 The SSL Zen — SSL Certificate Installer & HTTPS Redirects WordPress plugin before 4.7.40… CWE-287
- CVE-2026-14563 The advanced-customized-prompts WordPress plugin through 1.0.1 does not verify the… CWE-287
- CVE-2026-14559 The teddy-bear-customize-addon WordPress plugin through 1.0.5 does not verify a user's… CWE-287
- CVE-2026-88895 CyberPanel before 3.0.5 fails to enforce two-factor authentication on API endpoints… CWE-287