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TI-2026-47717 Aliases CVE-2026-67437GHSA-xpxj-f2fm-rqch

OliveTin: Unauthenticated DoS via OAuth2 State Memory Exhaustion (Unbounded Map Growth)

Priority HIGH 72CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-400.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00636 50th percentileScored 2026-11-07
Fix Fixed OliveTin (OliveTin): 3000.17.0github.com/OliveTin/OliveTin (Go): 0.0.0-20260708075951-ec114e95d297

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OliveTinOliveTin3000.0.0 to before 3000.17.03000.17.0Patch availableCNA
—github.com/OliveTin/OliveTin (Go)0.0.0-20251024001301-45f9c18bc3ee to before 0.0.0-20260708075951-ec114e95d2970.0.0-20260708075951-ec114e95d297Patch availableGHSA-xpxj-f2fm-rqch
  • OliveTin VendorOliveTin Affected 3000.0.0 to before 3000.17.0 Fixed in 3000.17.0 Patch available CNA
  • github.com/OliveTin/OliveTin (Go) Vendor— Affected 0.0.0-20251024001301-45f9c18bc3ee to before 0.0.0-20260708075951-ec114e95d297 Fixed in 0.0.0-20260708075951-ec114e95d297 Patch available GHSA-xpxj-f2fm-rqch

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:olivetin:olivetin:*:*:*:*:*:*:*:*——OliveTin
  • cpe:2.3:a:olivetin:olivetin:*:*:*:*:*:*:*:* Versions — — ·OliveTin

Remediation

  • Fix · CNA OliveTin (OliveTin) Fixed in 3000.17.0
  • Fix · GHSA-xpxj-f2fm-rqch github.com/OliveTin/OliveTin (Go) Fixed in 0.0.0-20260708075951-ec114e95d297 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-67437
  2. 2026-10-03 Alias added: GHSA-xpxj-f2fm-rqch
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Advisory 1

Other 4

  • TI-2026-23456 OliveTin: JWT Audience Validation Bypass in Local Key and HMAC Modes CVSS 3.1HIGH 8.8
  • TI-2026-22008 OS command injection in OliveTin CVSS 3.1CRITICAL 10.0
  • TI-2026-22985 OliveTin: Unauthenticated Action Termination via KillAction When Guests Must Login CVSS 3.1HIGH 7.5
  • TI-2026-22984 OliveTin: Unauthenticated DoS via concurrent map writes in OAuth2 state handling CVSS 3.1HIGH 7.5
  • TI-2026-22627 OliveTin: Unauthenticated Denial of Service via Memory Exhaustion in PasswordHash API Endpoint CVSS 3.1HIGH 7.5
  • TI-2026-24370 OliveTin's unsafe parsing of UniqueTrackingId can be used to write files CVSS 3.1HIGH 8.5
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences