5.1

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

Awaiting analysis
AliasesUBUNTU-CVE-2026-71498DEBIAN-CVE-2026-71498GHSA-j4r3-hg7j-8chg
Published 06-08-2026Last modified 07-08-2026

Vulnerability summary

CVE-2026-71498 is a medium (CVSS 5.1) Out-of-bounds Read vulnerability in uhop node-re2. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.1, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.1/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 06-08-2026
    PublishedVulnerability first disclosed.
  2. 07-08-2026
    Last modifiedVulnerability information updated.

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 metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.17% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • node-re2All versions (No fix recorded) | < 1.26.1+~cs1.7.0-1
Npm1 product
  • re2< 1.26.1
Ubuntu1 product
  • node-re2All versions (No fix recorded)
Uhop1 product

4 vendors · 4 products

References

7 links