CVE-2026-116795 RE2JS - Denial of Service

RE2JS 2.2.0 to 2.8.7 contains a denial of service caused by quadratic time complexity in lookbehind with repeated matching APIs, letting attackers monopolize single-threaded workers, exploit requires attacker-controlled input.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
28 October 2026
Updated
29 October 2026
Weakness
CWE-407

Vendor fix

Update to version 2.8.7 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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