CVE-2025-46784: A denial of service vulnerability exists in the lasso_node_init_from_message_with_format functionality of Entr

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2025-46784 is a high-severity flaw (CVSS 7.5) affecting lasso. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-401
Published	2025-11-05
Last modified	2026-10-18

Publisher (CNA): Talos · Vendor: entrouvert

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-05 15:15 UTCPublished CVE record published
2026-10-18 21:10 UTCUpdated Record last modified

entrouvert lasso DOWNGRADE

Affected: 2.5.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.5.1

1. Check installed version

apt-cache policy lasso || rpm -q lasso || lasso --version

2. No fixed release: DOWNGRADE to a release before 2.5.1 (Debian / Ubuntu)

apt-cache madison lasso sudo apt install lasso=<VERSION_BEFORE_2.5.1> sudo apt-mark hold lasso

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list lasso sudo dnf downgrade lasso-<VERSION_BEFORE_2.5.1> sudo dnf versionlock add lasso

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-2025-46784?

lasso: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-46784 being exploited?

CVE-2025-46784 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-2025-46784 affect?

CVE-2025-46784 affects lasso. Severity is high (CVSS 7.5). 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 atta

How urgent is CVE-2025-46784?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-47151 CRITICAL 9.8 DOWNGRADE A type confusion vulnerability exists in the lasso_node_impl_init_from_xml functionality of Entr'ouvert La
CVE-2025-46404 HIGH 7.5 DOWNGRADE A denial of service vulnerability exists in the lasso_provider_verify_saml_signature functionality of Entr&#39
CVE-2025-46705 HIGH 7.5 DOWNGRADE A denial of service vulnerability exists in the g_assert_not_reached functionality of Entr'ouvert Lasso 2.

References

← Back to latest CVEs