CVE-2026-71498: CWE-125: Out-of-bounds Read in uhop node-re2
node-re2 versions prior to 1.26.1 contain an out-of-bounds read vulnerability due to improper handling of truncated multi-byte UTF-8 sequences in Buffers. This flaw allows the native binding to read past the allocated buffer boundary, potentially disclosing adjacent memory contents. The issue is fixed in version 1.26.1.
AI Analysis
Technical Summary
The vulnerability in node-re2 (CVE-2026-71498) arises when a Buffer containing a truncated multi-byte UTF-8 sequence is passed to the native RE2 regular expression bindings for Node.js. Before version 1.26.1, the native code attempts to decode the incomplete code point, causing an out-of-bounds read beyond the allocated buffer. This can lead to unintended disclosure of adjacent memory data. The flaw is classified as CWE-125 (Out-of-bounds Read) and has a CVSS 3.1 base score of 5.1, indicating medium severity. The vulnerability is resolved in node-re2 version 1.26.1.
Potential Impact
An attacker supplying a specially crafted Buffer with a truncated UTF-8 sequence could cause the native binding to read memory beyond the intended buffer boundary. This out-of-bounds read may disclose adjacent memory contents, potentially leaking sensitive information. There is no indication of code execution or denial of service. No known exploits are reported in the wild.
Mitigation Recommendations
Upgrade node-re2 to version 1.26.1 or later, where this vulnerability is fixed. No other mitigation is indicated or required.
CVE-2026-71498: CWE-125: Out-of-bounds Read in uhop node-re2
Description
node-re2 versions prior to 1.26.1 contain an out-of-bounds read vulnerability due to improper handling of truncated multi-byte UTF-8 sequences in Buffers. This flaw allows the native binding to read past the allocated buffer boundary, potentially disclosing adjacent memory contents. The issue is fixed in version 1.26.1.
CVSS v3.1
Score 5.1medium
Affected software
uhop
node-re2
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in node-re2 (CVE-2026-71498) arises when a Buffer containing a truncated multi-byte UTF-8 sequence is passed to the native RE2 regular expression bindings for Node.js. Before version 1.26.1, the native code attempts to decode the incomplete code point, causing an out-of-bounds read beyond the allocated buffer. This can lead to unintended disclosure of adjacent memory data. The flaw is classified as CWE-125 (Out-of-bounds Read) and has a CVSS 3.1 base score of 5.1, indicating medium severity. The vulnerability is resolved in node-re2 version 1.26.1.
Potential Impact
An attacker supplying a specially crafted Buffer with a truncated UTF-8 sequence could cause the native binding to read memory beyond the intended buffer boundary. This out-of-bounds read may disclose adjacent memory contents, potentially leaking sensitive information. There is no indication of code execution or denial of service. No known exploits are reported in the wild.
Mitigation Recommendations
Upgrade node-re2 to version 1.26.1 or later, where this vulnerability is fixed. No other mitigation is indicated or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-06T19:56:23.726Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a750711bf8831d5395f5e1d
Added to database: 08/06/2026, 22:13:37 UTC
Last enriched: 08/14/2026, 16:09:30 UTC
Last updated: 09/21/2026, 22:01:37 UTC
Views: 53
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