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TI-2026-50052 Aliases CVE-2026-71430GHSA-8hcv-x26h-mcgp

Reachable assertion in uhop node-re2

Priority MEDIUM 61CWE-617Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-617.

Summary

node-re2 provides RE2 regular expression bindings for Node.js. Prior to version 1.25.1, the WrappedRE2::Replace function built its replacement result and passed it to V8 using ToLocalChecked without checking for the empty MaybeLocal that V8 returns when the resulting string or buffer exceeds V8's maximum string length. When a global replace uses an output amplifying replacement template, the result can grow quadratically with the input size, and once the result exceeds V8's maximum string length, the unchecked ToLocalChecked call causes a fatal, uncatchable process abort instead of a catchable exception. This issue is fixed in version 1.25.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00157 4th percentileScored 2026-11-07
Fix Fixed node-re2 (uhop): 1.25.1re2 (npm): 1.25.1

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

VendorProductAffected versionsFixed inStatusSource
uhopnode-re2before 1.25.11.25.1Patch availableCNA
—re2 (npm)before 1.25.11.25.1Patch availableGHSA-8hcv-x26h-mcgp
  • node-re2 Vendoruhop Affected before 1.25.1 Fixed in 1.25.1 Patch available CNA
  • re2 (npm) Vendor— Affected before 1.25.1 Fixed in 1.25.1 Patch available GHSA-8hcv-x26h-mcgp

Remediation

  • Fix · CNA node-re2 (uhop) Fixed in 1.25.1
  • Fix · GHSA-8hcv-x26h-mcgp re2 (npm) Fixed in 1.25.1 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat Enterprise Linux AI (RHEL AI) 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-71430
  2. 2026-10-03 Alias added: GHSA-8hcv-x26h-mcgp

References

Other 2

  • 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-2026-50051 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
  • TI-2026-65778 stream-json: Prototype pollution: Assembler writes this.current[this.key] on plain objects CVSS 3.1MEDIUM 5.1
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences