Out-of-bounds read in uhop node-re2
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| uhop | node-re2 | before 1.26.1 | 1.26.1 | Patch available | CNA |
| — | re2 (npm) | before 1.26.1 | 1.26.1 | Patch available | GHSA-j4r3-hg7j-8chg |
- node-re2 Vendoruhop Affected before 1.26.1 Fixed in 1.26.1 Patch available CNA
- re2 (npm) Vendor— Affected before 1.26.1 Fixed in 1.26.1 Patch available GHSA-j4r3-hg7j-8chg
Remediation
- Fix · CNA node-re2 (uhop) Fixed in 1.26.1
- Fix · GHSA-j4r3-hg7j-8chg re2 (npm) Fixed in 1.26.1 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Enterprise Linux AI (RHEL AI) 3
Timeline
- 2026-10-02 Threatist record created from CVE-2026-71498
- 2026-10-03 Alias added: GHSA-j4r3-hg7j-8chg
References
More uhop vulnerabilities
- TI-2026-78913 Quadratic CPU use in stream-json FlexAssembler allows denial of service CVSS 3.1MEDIUM 6.2
- TI-2026-65777 stream-json: JSONC parser and verifier re-scan the whole accumulated comment on every input chunk CVSS 3.1MEDIUM 6.2
- TI-2026-50052 Reachable assertion in uhop node-re2 CVSS 3.1MEDIUM 6.2
- TI-2026-50051 stream-json: pick/ignore/filter/replace filters are O(depth²) on nested input — small… CVSS 3.1MEDIUM 6.2
- TI-2026-48273 Infinite loop in uhop node-re2 CVSS 3.1MEDIUM 6.2
- TI-2026-47734 Out-of-bounds read in uhop node-re2 CVSS 3.1MEDIUM 5.7
Sources
- CVE-2026-71498 · CVE Program
- CVE-2026-71498 · NVD
- FIRST EPSS
- GHSA-j4r3-hg7j-8chg · GitHub Advisory Database · CC BY 4.0
- CVE-2026-71498 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences