CVE-2021-42836 is a vulnerability tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed February 18, 2026; most recent activity February 18, 2026.
Two vulnerabilities related to Regular Expression Denial of Service (ReDoS) have been reported. CVE-2020-28493, published on February 1, 2021, and CVE-2021-42836, published on October 22, 2021, both allow attackers to…