Medium severity · published Jul 30, 2026
CVE-2026-68499
re2: Global `String.prototype.match` with an empty-matchable pattern never advances → infinite loop with unbounded native memory growth (DoS)
6.2
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NO
node-re2 · uhop
< 1.25.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68499
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-68499
github.com
https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d
github.com
https://github.com/uhop/node-re2/releases/tag/1.25.2
github.com
https://github.com/uhop/node-re2/security/advisories/GHSA-6hxr-mr5r-9836
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