Medium severity · published Aug 6, 2026
CVE-2026-71498
node-re2: Out-of-bounds heap read in `replace`/`split` via a `Buffer` ending in a truncated multi-byte UTF-8 character → adjacent heap memory disclosed to JavaScript
5.1
CVSS
0.2%
EPSS
No
On KEV
Description
node-re2 provides RE2 regular expression bindings for Node.js. Prior to version 1.26.1, passing a Buffer whose final bytes form a truncated (incomplete) multi-byte UTF-8 sequence could cause the native binding to read past the end of the allocated buffer while attempting to decode the final, incomplete code point. This could result in an out-of-bounds read and potential disclosure of adjacent memory contents. This issue is fixed in version 1.26.1.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NO
node-re2 · uhop
< 1.26.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-71498
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-71498
github.com
https://github.com/uhop/node-re2/commit/9d72042a6a0da5bc523908b04808ea0e23867cc4
github.com
https://github.com/uhop/node-re2/issues/272
github.com
https://github.com/uhop/node-re2/security/advisories/GHSA-j4r3-hg7j-8chg
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6.2
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5.7
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