medium6.2
CVE-2026-68499
re2: Global `String.prototype.match` with an empty-matchable pattern never advances → infinite loop with unbounded native memory growth (DoS)
Impact
re2 provides Node.js bindings for Google's RE2 regular expression engine. Prior to 1.25.2, re2's String.prototype.match implementation with a global RE2 pattern that can match the empty string fails to advance its native matching cursor in lib/match.cc, causing an infinite loop and unbounded native memory growth that blocks the event loop and can exhaust host memory. This issue is fixed in 1.25.2.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | re2 | <= 1.25.1 | 1.25.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-6hxr-mr5r-9836
- https://github.com/uhop/node-re2/security/advisories/GHSA-6hxr-mr5r-9836
- https://nvd.nist.gov/vuln/detail/CVE-2026-68499
- https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d
- https://github.com/uhop/node-re2/releases/tag/1.25.2