CVE-2026-44946: A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service (ACS) handler did not enfo

Routine

HIGH 7.4REMOTEUPGRADE

CVE-2026-44946 is a high-severity flaw (CVSS 7.4) affecting rancher. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service (ACS) handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 before 2.14.3,

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.4 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-294
Published	2026-06-30
Last modified	2026-07-02

Publisher (CNA): SUSE · Vendor: suse

Last updated 2026-07-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-30 13:18 UTCPublished CVE record published
2026-07-02 19:58 UTCUpdated Record last modified

suse rancher UPGRADE

Affected: >= 2.11.0 and < 2.11.15 · >= 2.12.0 and < 2.12.11 · >= 2.13.0 and < 2.13.7 · >= 2.14.0 and < 2.14.3

Fixed in: 2.11.15, 2.12.11, 2.13.7, 2.14.3

Safe to downgrade to: a release before 2.11.0

1. Check installed version

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

2. UPGRADE to 2.11.15 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rancher

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 2.11.0 (Debian / Ubuntu)

apt-cache madison rancher sudo apt install rancher=<VERSION_BEFORE_2.11.0> sudo apt-mark hold rancher

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

dnf --showduplicates list rancher sudo dnf downgrade rancher-<VERSION_BEFORE_2.11.0> sudo dnf versionlock add rancher

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.

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-2026-44946?

rancher: upgrade to 2.11.15, 2.12.11, 2.13.7, 2.14.3. Exact commands for each OS are on this page.

Is CVE-2026-44946 being exploited?

CVE-2026-44946 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-2026-44946 affect?

CVE-2026-44946 affects rancher. Severity is high (CVSS 7.4). A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service (ACS) handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 b

How urgent is CVE-2026-44946?

Priority 39/100. High severity; Remotely exploitable, no login, no user action

Software pages

Rancher vulnerabilities

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References

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