Vulnerability · Published Feb 10, 2026 · Assigned by certcc
CVE-2026-1774CASL Ability, versions 2.4.0 through 6.7.4, contains a prototype pollution vulnerability.
Critical 9.8
In plain English
A critical-severity security flaw in CASL Ability from CASL Ability. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.7%top 46.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
CASL Ability, versions 2.4.0 through 6.7.4, contains a prototype pollution vulnerability.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @casl/ability | 6.7.5 | GHSA-x9vf-53q3-cvx6 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| CASL Ability | CASL Ability | 2.4.0 – through 6.7.4 |