Review reviewHigh

CVE-2023-54365

Traefik Traefik, Red Hat OpenShift AI (RHOAI), Red Hat OpenShift Dev Spaces

Traefik before 2.10.5 and 3.0.0-beta4 is affected by a denial-of-service vulnerability in HTTP/2 request handling inherited from the Go standard library's HTTP/2 implementation (CVE-2023-44487 / CVE-2023-39325, the 'Rapid Reset' technique). A remote attacker can rapidly create and cancel HTTP/2 streams to exhaust server resources and cause service unavailability.

CVSS: 8.7
EPSS: 0.57%
CISA KEV: Not listed
Published: 2026.06.23

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.57%

Technical severityCVSS 8.7

Vulnerability overview

Affected product and versions

Product: Traefik Traefik, Red Hat OpenShift AI (RHOAI), Red Hat OpenShift Dev Spaces
Affected versions: < 2.10.5, >= 3.0.0-beta1 < 3.0.0-beta4, 3.0.0, < 1.20.10, >= 1.21.0 < 1.21.3
Fixed versions: 2.10.5, 1.20.10, 1.21.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Traefik Traefik, Red Hat OpenShift AI (RHOAI), Red Hat OpenShift Dev Spaces and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

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
CWE: CWE-400, CWE-770