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TI-2026-85774 Aliases CVE-2026-121820

Unbounded decompression in armeria-saml enables denial of service

Priority LOW 38Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

LY Corporation's Armeria (armeria-saml) versions prior to 1.43.0 are affected. The HTTP-Redirect binding decoder decompresses SAML messages without limiting the output size before signature validation. An unauthenticated remote attacker can exhaust server memory and cause a denial of service.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

A vulnerability has been identified in armeria-saml versions prior to 1.43.0, where the HTTP-Redirect binding decoder decompresses attacker-supplied SAML messages without limiting the output size before signature validation, allowing an unauthenticated remote attacker to exhaust server memory and cause a denial of service.

Why it matters now

EPSS 0.004 34th percentileScored 2026-11-07
Fix Fixed Armeria (LY Corporation): 1.43.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LY CorporationArmeria—1.43.0Patch availableCNA
  • Armeria VendorLY Corporation Affected — Fixed in 1.43.0 Patch available CNA

Remediation

Upgrade Armeria to version 1.43.0, which contains the fix.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Armeria (LY Corporation) Fixed in 1.43.0

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-121820
  2. 2026-11-07 Priority changed: MEDIUM → LOW

References

Other 2

  • TI-2026-10143 Hard-coded credentials in LY Corporation Central Dogma CVSS 4.0CRITICAL 9.4
  • TI-2026-10142 A vulnerability has been identified in centraldogma-server-mirror-git versions prior to… CVSS 4.0HIGH 8.8
  • TI-2026-10145 LDAP injection in LY Corporation Central Dogma CVSS 4.0MEDIUM 6.9
  • TI-2026-14054 A code injection vulnerability exists in the LINE Android app prior to version 26.7.2. CVSS 4.0HIGH 8.7
  • TI-2026-10146 A vulnerability has been identified in armeria-xds versions prior to 1.41.0, where xDS… CVSS 4.0CRITICAL 9.1
  • TI-2026-85778 Excessive memory allocation in Armeria from malformed Thrift messages CVSS 4.0HIGH 8.7
See all 17 →

Sources

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