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VulnerabilityPublished Updated

CVE-2025-47151: lasso security update

Affects lassoSource GCVE Database

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Authoritative record:CVE-2025-47151· Critical 9.8

Not known to be exploited · CVSS 9.8 Critical : upgrade to 2.7.0-11.el9_7.3 as a priority.

Data as of 13 Nov 2026, 20:25 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 2.7.0-11.el9_7.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade the AlmaLinux to 2.7.0-11.el9_7.3.

Affected software

ProductAffectedFixed in
AlmaLinux 9lassoAffected
  • <2.7.0-11.el9_7.3
Fixed in
  • 2.7.0-11.el9_7.3
AlmaLinux 9lasso-develAffected
  • <2.7.0-11.el9_7.3
Fixed in
  • 2.7.0-11.el9_7.3
AlmaLinux 9python3-lassoAffected
  • <2.7.0-11.el9_7.3
Fixed in
  • 2.7.0-11.el9_7.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A security update fixing this vulnerability is available in lasso version 2.7.0-11.el9_7.3 and later. Users should apply the update as provided by Red Hat to remediate the issue. Refer to the Red Hat advisory RHSA-2025:21462 and the update instructions at https://access.redhat.com/articles/11258 for detailed guidance. No additional mitigation steps are indicated by the vendor.

Description

A critical type confusion vulnerability (CVE-2025-47151) has been identified in the lasso library, which implements Liberty Alliance Single Sign-On standards including SAML and SAML2. This flaw affects versions of lasso prior to 2.7.0-11.el9_7.3. The vulnerability has been addressed in the fixed version 2.7.0-11.el9_7.3. Red Hat has issued an advisory confirming the critical severity and availability of a security update for affected Red Hat Enterprise Linux 9 variants.

References

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