NULL pointer dereference in Entr'ouvert Lasso
Priority LOW 34CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-476.
Summary
A denial of service vulnerability exists in the lasso_provider_verify_saml_signature functionality of Entr'ouvert Lasso 2.5.1. A specially crafted SAML response can lead to a denial of service. An attacker can send a malformed SAML response to trigger this vulnerability.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00636 50th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Entr'ouvert | Lasso | 2.5.1 | — | No fix listed | CNA |
- Lasso VendorEntr'ouvert Affected 2.5.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:entrouvert:lasso:2.5.1:*:*:*:*:*:*:* | 2.5.1 | Vulnerable | Entr'ouvert |
- cpe:2.3:a:entrouvert:lasso:2.5.1:*:*:*:*:*:*:* Versions 2.5.1 Vulnerable ·Entr'ouvert
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-46404
- 2026-10-03 Alias added: GHSA-2vvf-4m7q-pvpx
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
More Entr'ouvert Lasso vulnerabilities
- TI-2025-29740 Type confusion in Entr'ouvert Lasso CVSS 3.1CRITICAL 9.8
- TI-2015-01601 The prefix variable in the get_or_define_ns function in Lasso before commit… CVSS 3.0HIGH 7.5
- TI-2021-09336 Lasso all versions prior to 2.7.0 has improper verification of a cryptographic signature. CVSS 3.1HIGH 7.5
- TI-2025-29429 Memory leak in Entr'ouvert Lasso CVSS 3.1HIGH 7.5
- TI-2025-29376 Reachable assertion in Entr'ouvert Lasso CVSS 3.1HIGH 7.5
- TI-2009-00048 Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2025-46404 · CVE Program
- CVE-2025-46404 · NVD
- FIRST EPSS
- GHSA-2vvf-4m7q-pvpx · GitHub Advisory Database · CC BY 4.0
- CVE-2025-46404 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences