# CVE-2026-71498 — uhop node-re2

> As of 2026-08-07, CVE-2026-71498 is a MEDIUM-severity vulnerability in uhop node-re2, CVSS v3.1 5.1, EPSS 0.1% (5.1th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-71498 as of 2026-08-07; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-07

## What is CVE-2026-71498?

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.

The record classifies CVE-2026-71498 under weakness class [CWE-125](https://intel.threadlinqs.com/cwe/CWE-125). Its CVSS v3 base vector states that the flaw requires local access to the host, needs no prior authentication, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 60 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 5.1 — MEDIUM (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 5.1% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 2.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-06, last modified 2026-08-07

## Is CVE-2026-71498 being exploited?

It currently carries a trending score of 31 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **uhop**: node-re2

Affected software packages:

- `npm:re2` — patched in 1.26.1

## How to fix CVE-2026-71498

Fixed versions are recorded for 1 package: npm:re2 1.26.1. No vendor patch reference has been recorded for CVE-2026-71498 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-71498

No threat campaign in the Threadlinqs corpus currently references CVE-2026-71498, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories, NVD. Last verified by Threadlinqs on 2026-08-09. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/uhop/node-re2/security/advisories/GHSA-j4r3-hg7j-8chg)

**Other references**

- [github.com](https://github.com/uhop/node-re2/issues/272)
- [github.com (9d72042a6a0da5bc523908b04808ea0e23867cc4)](https://github.com/uhop/node-re2/commit/9d72042a6a0da5bc523908b04808ea0e23867cc4)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-71498
Full detection coverage and IOCs for threats exploiting CVE-2026-71498 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp