HIGHCVSS v4 8.7Vulnerability
CVE-2026-121820
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.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-07T06:40:34.987550+00:00
- Epss score
- 0.004
- Cvss severity
- HIGH
- Cvss score
- 8.7
- Retrieved at
- 2026-11-07T06:44:44+00:00
- Last source
- FIRST EPSS
- Score
- 8.7
- Cvss version
- 4.0
- Cve id
- CVE-2026-121820
- Cvss vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- First seen by Signal
- 2026-11-06T10:16:10+00:00
- Name
- CVE-2026-121820
- Vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Published at
- 2026-11-06T08:17:20.410
- Last modified
- 2026-11-06T20:36:20.133
- Epss percentile
- 0.34446
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