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CVE-2023-25957: A vulnerability has been identified in Mendix SAML (Mendix 7 compatible) (All versions >= V1.16.4 < V1.17.3),

49
This month
CRITICAL 9.1REMOTEUPGRADE

CVE-2023-25957 is a critical-severity flaw (CVSS 9.1) affecting saml. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been identified in Mendix SAML (Mendix 7 compatible) (All versions >= V1.16.4 < V1.17.3), Mendix SAML (Mendix 8 compatible) (All versions >= V2.2.0 < V2.3.0), Mendix SAML (Mendix 9 latest compatible, New Track) (All versions >= V3.1.9 < V3.3.1), Mendix SAML (Mendix 9 latest compatible, Upgrade Track) (All versions >= V3.1.8 < V3.3.0), Mendix SAML (Mendix 9.6 compatible, New Track) (All versions >= V3.1.9 < V3.2.7), Mendix SAML

Why this priority

  • Critical severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.1 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.6% (top 53%)
CISA exploited listNo
WeaknessCWE-303, CWE-287
Published2023-03-14
Last modified2026-10-23
Publisher (CNA): Siemens AG · Vendor: mendix

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

mendix saml UPGRADE
Affected: >= 1.16.4 and < 1.17.2 · >= 2.2.0 and < 2.2.3 · >= 3.1.9 and < 3.2.5
Fixed in: 1.17.2, 2.2.3, 3.2.5
Safe to downgrade to: a release before 1.16.4
1. Check installed version
apt-cache policy saml || rpm -q saml || saml --version
2. UPGRADE to 1.17.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade saml
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade saml
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 1.16.4 (Debian / Ubuntu)
apt-cache madison saml sudo apt install saml=<VERSION_BEFORE_1.16.4> sudo apt-mark hold saml
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list saml sudo dnf downgrade saml-<VERSION_BEFORE_1.16.4> sudo dnf versionlock add saml
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.

Exact fixes by distribution

Fedora 46 · python-fontconfig · FIXED · 0.6.3-1.fc46 · FEDORA-2026-f92ca8b01f · source
sudo dnf upgrade --advisory=FEDORA-2026-f92ca8b01f
Fedora ELN · valgrind · FIXED · 3.28.0-1.eln159 · FEDORA-2026-c593ef1d15 · source
sudo dnf upgrade --advisory=FEDORA-2026-c593ef1d15
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-2023-25957?

saml: upgrade to 1.17.2, 2.2.3, 3.2.5. Exact commands for each OS are on this page.

Is CVE-2023-25957 being exploited?

CVE-2023-25957 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-2023-25957 affect?

CVE-2023-25957 affects saml. Severity is critical (CVSS 9.1). A vulnerability has been identified in Mendix SAML (Mendix 7 compatible) (All versions >= V1.16.4 < V1.17.3), Mendix SAML (Mendix 8 compatible) (All versions >= V2.2.0 < V2.3.0), Mendix SAML (Mendix 9 latest compatible, New Track) (All vers

How urgent is CVE-2023-25957?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

References

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