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VulnerabilityPublished

CVE-2025-47151: Entr'ouvert Lasso · Type Confusion

Affects Entr'ouvert LassoSource CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.0% chance of exploitation in 30 days – higher than 65% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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. Weaponised: 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Entr'ouvert LassoAffected
  • =2.5.1
  • =2.8.2
Fixed in–

AI-suggested

Given the absence of published patches at the time of disclosure, European organizations should implement immediate compensating controls. These include deploying network-level filtering to restrict and monitor inbound SAML traffic, especially from untrusted sources. Implement strict validation and sanitization of all SAML responses before processing, possibly using additional XML schema validation tools. Employ runtime application self-protection (RASP) or web application firewalls (WAFs) configured to detect anomalous XML payloads or unusual SAML assertions. Conduct thorough audits of systems using Entr'ouvert Lasso to identify affected versions and isolate them where possible. Prepare for rapid patch deployment once vendor updates become available. Additionally, enhance logging and monitoring to detect exploitation attempts and unusual authentication activities. Educate security teams on this vulnerability to ensure swift incident response if exploitation is suspected.

Description

A type confusion vulnerability exists in the lasso_node_impl_init_from_xml functionality of Entr'ouvert Lasso 2.5.1 and 2.8.2. A specially crafted SAML response can lead to an arbitrary code execution. An attacker can send a malformed SAML response to trigger this vulnerability.

References

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