CVE-2021-39204: high-severity vulnerability in pomerium
Excessive CPU usage in Pomerium
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 1.7%
Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, incorrectly handles resetting of HTTP/2 streams with excessive complexity. This can lead to high CPU utilization when a large number of streams are reset. This can result in a DoS condition. Pomerium versions 0.14.8 and 0.15.1 contain an upgraded envoy binary with this vulnerability patched.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
pomerium · pomeriumRelated CVEs — pomerium
In the same product, most dangerous first.
CVE-2021-39162HIGHIncorrect handling of H2 GOAWAY + SETTINGS framesEPSS 1.6%CVE-2021-39206HIGHIncorrect Authorization with specially crafted requestsEPSS 1.5%CVE-2022-24797MEDIUMExposure of Sensitive Information in PomeriumEPSS 1.4%CVE-2023-33189CRITICALIncorrect Authorization with specially crafted requestsEPSS 0.9%CVE-2021-41230MEDIUMOIDC claims not updated from Identity Provider in PomeriumEPSS 0.9%CVE-2026-50285HIGHPomerium: Pre-Auth Memory Exhaustion via Unbounded zstd Decompression in HPKE CallbackEPSS 0.7%