CVE catalog

CVE-2025-46784

Lasso vulnerabilities

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Nov 5, 2025, 2:56:57 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.64% · Oct 25, 2026

A denial of service vulnerability exists in the lasso_node_init_from_message_with_format functionality of Entr'ouvert Lasso 2.5.1. A specially crafted SAML response can lead to a memory depletion, resulting in denial of service. An attacker can send a malformed SAML response to trigger this vulnerability.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	lasso	sid	`2.9.0-5`	fixed
Debian	lasso	forky	`2.9.0-5`	fixed
Debian	lasso	trixie	`2.8.2-9+deb13u1`	fixed
Debian	lasso	trixie-security	`2.8.2-9+deb13u1`	fixed
Debian	lasso	bookworm	`2.8.1-1+deb12u1`	fixed
Debian	lasso	bookworm-security	`2.8.1-1+deb12u1`	fixed
Ubuntu	lasso	noble	`2.8.2-2ubuntu0.1`	fixed
Ubuntu	liblasso-perl	noble	`2.8.2-2ubuntu0.1`	fixed
Ubuntu	liblasso3-dev	noble	`2.8.2-2ubuntu0.1`	fixed
Ubuntu	liblasso3t64	noble	`2.8.2-2ubuntu0.1`	fixed
Ubuntu	python3-lasso	noble	`2.8.2-2ubuntu0.1`	fixed
Cpe	lasso	Not reported	Not reported	unknown
Ubuntu	lasso	16.04	`2.4.1-1build1`	vulnerable
Ubuntu	lasso	16.04	`2.5.0-1`	vulnerable
Ubuntu	lasso	16.04	`2.5.0-2`	vulnerable
Ubuntu	lasso	16.04	`2.5.0-3`	vulnerable
Ubuntu	lasso	16.04	`2.5.0-3build1`	vulnerable
Ubuntu	lasso	16.04	`2.5.0-3ubuntu2`	vulnerable
Ubuntu	lasso	18.04	`2.5.0-5build4`	vulnerable
Ubuntu	lasso	18.04	`2.5.0-5build5`	vulnerable
Ubuntu	lasso	18.04	`2.5.0-5ubuntu1`	vulnerable
Ubuntu	lasso	18.04	`2.5.1-0ubuntu1`	vulnerable
Ubuntu	lasso	18.04	`2.5.1-0ubuntu1.1`	vulnerable
Ubuntu	lasso	18.04	`2.5.1-0ubuntu1.2`	vulnerable
Ubuntu	lasso	20.04	`2.6.0-2ubuntu1`	vulnerable
Ubuntu	lasso	20.04	`2.6.0-2ubuntu2`	vulnerable
Ubuntu	lasso	20.04	`2.6.0-7ubuntu1`	vulnerable
Ubuntu	lasso	20.04	`2.6.0-7ubuntu1.1`	vulnerable
Ubuntu	lasso	20.04	`2.6.0-7ubuntu1.2`	vulnerable
Ubuntu	lasso	22.04	`2.6.1-3build1`	vulnerable
Ubuntu	lasso	22.04	`2.6.1-3build3`	vulnerable
Ubuntu	lasso	22.04	`2.7.0-1`	vulnerable
Ubuntu	lasso	22.04	`2.7.0-2`	vulnerable
Ubuntu	lasso	22.04	`2.7.0-2build1`	vulnerable
Ubuntu	lasso	22.04	`2.7.0-2build2`	vulnerable
Ubuntu	lasso	22.04	`2.7.0-2build3`	vulnerable
Ubuntu	lasso	22.04	`2.7.0-2ubuntu0.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	lasso	source	sid	`2.8.1-1`	not yet assigned	Not reported	Not reported
Debian	lasso	source	forky	`2.8.1-1`	not yet assigned	Not reported	Not reported
Debian	lasso	source	trixie	`2.8.1-1`	not yet assigned	Not reported	Not reported
Debian	lasso	source	bookworm	`2.8.1-1`	not yet assigned	Not reported	Not reported
Ubuntu	lasso	deb	noble	`2.8.2-2ubuntu0.1`	Not reported	Not reported	Not reported
Ubuntu	liblasso-perl	deb	noble	`2.8.2-2ubuntu0.1`	Not reported	Not reported	Not reported
Ubuntu	liblasso3-dev	deb	noble	`2.8.2-2ubuntu0.1`	Not reported	Not reported	Not reported
Ubuntu	liblasso3t64	deb	noble	`2.8.2-2ubuntu0.1`	Not reported	Not reported	Not reported
Ubuntu	python3-lasso	deb	noble	`2.8.2-2ubuntu0.1`	Not reported	Not reported	Not reported
Ubuntu	lasso	deb	22.04	`2.7.0-2ubuntu0.1`	Not reported	UBUNTU-CVE-2025-46784	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[liblasso3]Fixed
Source package: [lasso]
Details (4)
- 2.8.1-1+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
[liblasso3-dev]Fixed
Source package: [lasso]
Details (4)
- 2.8.1-1+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
[liblasso-perl]Fixed
Source package: [lasso]
Details (4)
- 2.8.1-1+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
[python3-lasso]Fixed
Source package: [lasso]
Details (4)
- 2.8.1-1+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12
- 2.8.1-1+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · bookworm; usn · lasso · debian · 12

[Debian 13 (Trixie)]

[liblasso3-dev]Fixed
Source package: [lasso]
Details (4)
- 2.8.2-9+deb13u1 · amd64 · trixie
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · arm64 · trixie
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
[liblasso3t64]Fixed
Source package: [lasso]
Details (4)
- 2.8.2-9+deb13u1 · amd64 · trixie
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · arm64 · trixie
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
[liblasso-perl]Fixed
Source package: [lasso]
Details (4)
- 2.8.2-9+deb13u1 · amd64 · trixie
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · arm64 · trixie
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
[python3-lasso]Fixed
Source package: [lasso]
Details (4)
- 2.8.2-9+deb13u1 · amd64 · trixie
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · arm64 · trixie
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13
- 2.8.2-9+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 2.8.1-1
  usn · lasso · debian · 13

Observed: Oct 27, 2026, 11:13:44 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]