What is the CVSS score of CVE-2026-1774?

CVE-2026-1774 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-1774?

Within 24 hours: Inventory all systems running CASL Ability 2.4.0-6.7.4 and assess exposure; implement network segmentation to restrict access to affected applications. Within 7 days: Deploy Web Application Firewall (WAF) rules to detect and block prototype pollution payloads; establish enhanced logging and monitoring for suspicious object manipulation attempts. Within 30 days: Evaluate alternative libraries or upgrade to patched versions when available; conduct security assessment of all affected applications for evidence of exploitation.

CVE-2026-1774

CRITICAL

2026-02-10 cret@cert.org

GHSA-x9vf-53q3-cvx6

Information Disclosure

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

CVE Published

Feb 10, 2026 - 16:16 nvd

CRITICAL 9.8

DescriptionCVE.org

CASL Ability, versions 2.4.0 through 6.7.4, contains a prototype pollution vulnerability.

AnalysisAI

Prototype pollution in CASL Ability authorization library versions 2.4.0 through 6.7.4. Can lead to authorization bypass in applications using CASL for access control.