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TI-2026-70755 Aliases CVE-2026-108865GHSA-pfxh-9349-4f24

Authentication bypass in AmoyLab Unla OAuth2 server

Priority MEDIUM 44CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

AmoyLab Unla through 0.10.0 contains an authentication bypass (CWE-287) in its OAuth2 server, which never authenticates the resource owner. An unauthenticated remote attacker can register a client, obtain an authorization code and exchange it for valid access tokens. These tokens grant access to OAuth2-protected MCP prefixes, proxied upstream APIs and injected credentials.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

AmoyLab Unla through 0.10.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain valid access tokens because the OAuth2 server never authenticates a resource owner. Attackers can register a client, request a code from /authorize, and exchange it at /token to access OAuth2-protected MCP prefixes, proxied upstream APIs and injected credentials.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00324 25th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
AmoyLabUnlaup to 0.10.0—No fix listedCNA
  • Unla VendorAmoyLab Affected up to 0.10.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Unla.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-11 Threatist record created from CVE-2026-108865
  2. 2026-10-11 Alias added: GHSA-pfxh-9349-4f24
  3. 2026-10-12 Priority changed: MEDIUM → LOW
  4. 2026-10-15 CISA SSVC decision points changed
  5. 2026-10-15 Priority changed: LOW → MEDIUM

References

Advisory 1

Other 3

Sources

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