CVE-2026-5343: Improper Check for Unusual or Exceptional Conditions vulnerability in Drupal SAML SSO - Service Provider allow

Routine

HIGH 7.4REMOTEUPGRADE

CVE-2026-5343 is a high-severity flaw (CVSS 7.4) affecting saml sso - service provider. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Check for Unusual or Exceptional Conditions vulnerability in Drupal SAML SSO - Service Provider allows Privilege Escalation. This issue affects SAML SSO - Service Provider: from 0.0.0 before 3.1.4.

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	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-754
Published	2026-05-28
Last modified	2026-07-21

Publisher (CNA): Drupal.org · Vendor: miniorange

Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-28 23:16 UTCPublished CVE record published
2026-07-21 10:10 UTCUpdated Record last modified

miniorange saml sso - service provider UPGRADE

Affected: >= 3.0.1 and < 3.1.4 · 7.x-1.0 · 7.x-1.1 · 7.x-1.2 · 7.x-1.3 · 7.x-1.4 · 7.x-1.5 · 7.x-1.6

Fixed in: 3.1.4

Safe to downgrade to: a release before 3.0.1

1. Check installed version

apt-cache policy saml-sso---service-provider || rpm -q saml-sso---service-provider || saml-sso---service-provider --version

2. UPGRADE to 3.1.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade saml-sso---service-provider

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade saml-sso---service-provider

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 3.0.1 (Debian / Ubuntu)

apt-cache madison saml-sso---service-provider sudo apt install saml-sso---service-provider=<VERSION_BEFORE_3.0.1> sudo apt-mark hold saml-sso---service-provider

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

dnf --showduplicates list saml-sso---service-provider sudo dnf downgrade saml-sso---service-provider-<VERSION_BEFORE_3.0.1> sudo dnf versionlock add saml-sso---service-provider

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-2026-5343?

saml sso - service provider: upgrade to 3.1.4. Exact commands for each OS are on this page.

Is CVE-2026-5343 being exploited?

CVE-2026-5343 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-2026-5343 affect?

CVE-2026-5343 affects saml sso - service provider. Severity is high (CVSS 7.4). Improper Check for Unusual or Exceptional Conditions vulnerability in Drupal SAML SSO - Service Provider allows Privilege Escalation. This issue affects SAML SSO - Service Provider: from 0.0.0 before 3.1.4.

How urgent is CVE-2026-5343?

Priority 35/100. High severity; Remotely exploitable, no login, no user action

Software pages

Drupal vulnerabilities

References

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