CVE-2023-54365: Traefik before 2.10.5 and 3.0.0-beta4 is affected by a denial-of-service vulnerability in HTTP/2 request handl

This month

HIGH 7.5REMOTEWATCHLISTUPGRADEUPGRADEMITIGATE

CVE-2023-54365 is a high-severity flaw (CVSS 7.5) affecting traefik, go, openshift ai. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-400, CWE-770
Published	2026-06-23
Last modified	2026-09-26

Publisher (CNA): VulnCheck · Vendor: golang · redhat · traefik

Last updated 2026-09-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-23 13:16 UTCPublished CVE record published
2026-09-26 23:10 UTCUpdated Record last modified

traefik traefik UPGRADE

Affected: < 2.10.5 · 3.0.0 beta1 · 3.0.0 beta2 · 3.0.0 beta3

Fixed in: 2.10.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy traefik || rpm -q traefik || traefik --version

2. UPGRADE to 2.10.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade traefik

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade traefik

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

golang go UPGRADE

Affected: < 1.20.10 · >= 1.21.0 and < 1.21.3

Fixed in: 1.20.10, 1.21.3

Safe to downgrade to: a release before 1.21.0

1. Check installed version

apt-cache policy go || rpm -q go || go --version

2. UPGRADE to 1.20.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade go

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade go

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.21.0 (Debian / Ubuntu)

apt-cache madison go sudo apt install go=<VERSION_BEFORE_1.21.0> sudo apt-mark hold go

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list go sudo dnf downgrade go-<VERSION_BEFORE_1.21.0> sudo dnf versionlock add go

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

redhat openshift ai MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openshift-ai || rpm -q openshift-ai || openshift-ai --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-54365?

traefik: upgrade to 2.10.5; go: upgrade to 1.20.10, 1.21.3; openshift ai: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-54365 being exploited?

CVE-2023-54365 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-54365 affect?

CVE-2023-54365 affects traefik, go, openshift ai. Severity is high (CVSS 7.5). 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).

How urgent is CVE-2023-54365?

Priority 50/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Go (Golang) vulnerabilities · Traefik vulnerabilities · Red Hat OpenShift vulnerabilities

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References

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