CVE-2026-28428

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-28428
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28428.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-28428
Aliases
  • GHSA-2659-p579-wv83
Published
2026-03-06T04:59:52Z
Modified
2026-10-28T02:30:31Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
Talishar: Authentication Bypass via Empty authKey Parameter Allows Unauthenticated Game Actions
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-287"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28428.json"
}
References

Affected packages

Git / github.com/talishar/talishar

Affected ranges

Type
GIT
Repo
https://github.com/talishar/talishar
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a9c218efa37756c9e7eed056fbff6ee03f79aefc
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "a9c218efa37756c9e7eed056fbff6ee03f79aefc"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "a9c218efa37756c9e7eed056fbff6ee03f79aefc"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28428.json"