What is CVE-2026-1774?

CVE-2026-1774 is a critical-severity vulnerability in Casl Ability, classified under CWE-1321: IMPROPERLY CONTROLLED MODIFICATION OF OBJECT PROTOTYPE ATTRIBUTES ('PROTOTYPE POLLUTION'). CVSS score: 9.8/10. Published 2026-02-10.

How severe is CVE-2026-1774?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Casl Ability

CVE-2026-1774

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

EPSS: 0.006 (45.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Casl Ability — versions 2.4.0

References

cret@cert.org
cret@cert.org
cret@cert.org
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-1774?: CVE-2026-1774 is a critical-severity vulnerability in Casl Ability, classified under CWE-1321: IMPROPERLY CONTROLLED MODIFICATION OF OBJECT PROTOTYPE ATTRIBUTES ('PROTOTYPE POLLUTION'). CVSS score: 9.8/10. Published 2026-02-10.
How severe is CVE-2026-1774?: Critical severity. CVSS v3 base score is 9.8 out of 10.