Vulnerability in Casl Ability

CVE-2026-1774

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

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.006 (48.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-1774: held from 0.006 to 0.006.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

References

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.