CVE-2026-71430

MEDIUMPre-NVD 6.26.2—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (4th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
6.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.2Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
6.2
EG Score
6.2MEDIUMmedium confidence
EG Risk
44
EG Risk 44/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity62% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
4th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 6, 2026

Last Modified

September 10, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

String.prototype.replace(re2, template) aborts the Node process (uncatchable ToLocalChecked on empty MaybeLocal) when the result exceeds V8's max string length · Advisory · uhop/node-re2 · GitHub

https://github.com/uhop/node-re2/security/advisories/GHSA-8hcv-x26h-mcgp

Vendor Advisories for CVE-2026-71430(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
node-re21.15.9+~cs1.8.18-1 ... 1.25.0+~cs1.6.0-2 (21 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-re21.18.0+~cs2.13.8-1 ... 1.26.1+~cs1.8.0-1 (12 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-re21.21.4+~cs2.13.13-2 ... 1.26.1+~cs1.8.0-1 (7 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-re21.21.4+~cs2.13.13-2, 1.22.1+~cs1.3.5-1, 1.23.3+~cs1.3.5-1, 1.25.0+~cs1.6.0-1, 1.25.0+~cs1.6.0-2
  • every version up to 1.26.1+~cs1.7.0-1: fixed in 1.26.1+~cs1.7.0-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
re2—
  • every version up to 1.25.1: fixed in 1.25.1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 41× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-05 08:20 UTCEG score recompute
  2. 2026-10-04 23:22 UTCEPSS rescore
  3. 2026-10-04 05:47 UTCEG score recompute
  4. 2026-10-03 14:26 UTCEPSS rescore
  5. 2026-10-02 09:36 UTCEG score recompute
  6. 2026-10-01 19:50 UTCEPSS rescore
  7. 2026-09-30 22:59 UTCEG score recompute
  8. 2026-09-30 15:03 UTCEPSS rescore
  9. 2026-09-29 05:51 UTCEG score recompute
  10. 2026-09-28 13:52 UTCEPSS rescore
  11. 2026-09-27 17:26 UTCEG score recompute
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-26 15:59 UTCEPSS rescore
  14. 2026-09-25 08:45 UTCEG score recompute
  15. 2026-09-24 06:00 UTCEG score recompute
  16. 2026-09-23 17:54 UTCEPSS rescore
  17. 2026-09-23 03:37 UTCEG score recompute
  18. 2026-09-22 01:14 UTCEG score recompute
  19. 2026-09-21 21:09 UTCEPSS rescore
  20. 2026-09-20 22:51 UTCEG score recompute
  21. 2026-09-20 20:16 UTCEPSS rescore
  22. 2026-09-19 20:15 UTCEG score recompute
  23. 2026-09-18 19:28 UTCEPSS rescore
  24. 2026-09-18 17:35 UTCEG score recompute
  25. 2026-09-17 15:12 UTCEG score recompute
Show 63 more
  1. 2026-09-16 14:08 UTCEPSS rescore
  2. 2026-09-16 11:11 UTCEG score recompute
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-15 07:13 UTCEG score recompute
  5. 2026-09-15 03:12 UTCEPSS rescore
  6. 2026-09-14 04:50 UTCEG score recompute
  7. 2026-09-13 02:28 UTCEG score recompute
  8. 2026-09-12 15:02 UTCEPSS rescore
  9. 2026-09-12 00:04 UTCEG score recompute
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-10 20:38 UTCEG score recompute
  12. 2026-09-10 09:35 UTCEPSS rescore
  13. 2026-09-09 06:04 UTCEG score recompute
  14. 2026-09-08 22:01 UTCEPSS rescore
  15. 2026-09-06 13:55 UTCEG score recompute
  16. 2026-09-06 13:48 UTCEPSS rescore
  17. 2026-09-05 11:32 UTCEG score recompute
  18. 2026-09-03 06:09 UTCEG score recompute
  19. 2026-09-02 14:12 UTCEPSS rescore
  20. 2026-09-02 00:54 UTCEG score recompute
  21. 2026-09-01 13:54 UTCEPSS rescore
  22. 2026-09-01 04:40 UTCEPSS rescore
  23. 2026-08-31 22:31 UTCEG score recompute
  24. 2026-08-30 19:17 UTCEPSS rescore
  25. 2026-08-29 10:28 UTCEG score recompute
  26. 2026-08-28 21:42 UTCEPSS rescore
  27. 2026-08-27 13:22 UTCEG score recompute
  28. 2026-08-26 14:47 UTCEPSS rescore
  29. 2026-08-26 10:59 UTCEG score recompute
  30. 2026-08-25 13:49 UTCEPSS rescore
  31. 2026-08-25 08:36 UTCEG score recompute
  32. 2026-08-23 03:50 UTCEG score recompute
  33. 2026-08-23 00:19 UTCEPSS rescore
  34. 2026-08-20 23:05 UTCEG score recompute
  35. 2026-08-20 22:56 UTCEPSS rescore
  36. 2026-08-19 20:42 UTCEG score recompute
  37. 2026-08-19 17:04 UTCEPSS rescore
  38. 2026-08-18 18:18 UTCEG score recompute
  39. 2026-08-18 13:49 UTCEPSS rescore
  40. 2026-08-18 13:49 UTCEPSS rescore
  41. 2026-08-17 15:54 UTCEG score recompute
  42. 2026-08-17 13:47 UTCEPSS rescore
  43. 2026-08-16 14:56 UTCEPSS rescore
  44. 2026-08-16 14:56 UTCEPSS rescore
  45. 2026-08-16 13:31 UTCEG score recompute
  46. 2026-08-16 02:15 UTCEPSS rescore
  47. 2026-08-15 11:08 UTCEG score recompute
  48. 2026-08-15 01:31 UTCEPSS rescore
  49. 2026-08-14 08:45 UTCEG score recompute
  50. 2026-08-13 22:00 UTCEPSS rescore
  51. 2026-08-13 06:22 UTCEG score recompute
  52. 2026-08-12 13:51 UTCEPSS rescore
  53. 2026-08-12 03:59 UTCEG score recompute
  54. 2026-08-11 01:35 UTCEG score recompute
  55. 2026-08-11 00:00 UTCEPSS rescore
  56. 2026-08-09 23:12 UTCEG score recompute
  57. 2026-08-09 13:47 UTCEPSS rescore
  58. 2026-08-08 20:50 UTCEG score recompute
  59. 2026-08-08 16:37 UTCEPSS rescore
  60. 2026-08-07 18:27 UTCEG score recompute
  61. 2026-08-07 17:27 UTCEG score recompute
  62. 2026-08-06 22:38 UTCEG score recompute
  63. 2026-08-06 22:07 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-71430?
CVE-2026-71430 is a medium vulnerability published on August 6, 2026. 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…
When was CVE-2026-71430 disclosed?
CVE-2026-71430 was first published on August 6, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71430 actively exploited?
CVE-2026-71430 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71430?
CVE-2026-71430 has a CVSS base score of 6.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71430?
A fix for CVE-2026-71430 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-71430 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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