What’s Vulnerable › Vulnerabilities

CVE-2026-67437: OliveTin: Unauthenticated DoS via OAuth2 State Memory Exhaustion (Unbounded Map Growth)

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-29 · updated 2026-07-30
• Weakness: CWE-400

Description

OliveTin gives access to predefined shell commands from a web interface. From 3000.0.0 until 3000.17.0, the service/internal/auth/otoauth2/restapi_auth_oauth2.go OAuth2 login handler stores per-login state in the registeredStates map on every /oauth/login request without expiring, deleting, or bounding entries, allowing an unauthenticated attacker to exhaust memory and cause a denial of service. This issue is fixed in version 3000.17.0.

Affected products

• OliveTin: from 3000.0.0, < 3000.17.0

References

• https://github.com/OliveTin/OliveTin/commit/ec114e95d297b806c3ca0c37bc139b3c9c517b3f
• https://github.com/OliveTin/OliveTin/releases/tag/3000.17.0
• https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xpxj-f2fm-rqch
• https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xpxj-f2fm-rqch

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