CVE-2026-121820

UNKNOWN 0.0

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	ly corporation
Product	armeria
Published	Nov 6, 2026

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Affected Versions

LY Corporation / Armeria

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

line.github.io: https://line.github.io/security-advisory-blog/CVE-2026-121820/ github.com: https://github.com/line/armeria/security/advisories/GHSA-6hgp-j5h7-33m3