CVE-2026-23870

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 38% of all CVEs by exploit prediction. 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, nvd
Elevated
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to server crashes, out-of-memory exceptions or excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.5, 19.1.0 through 19.1.6, and 19.2.0 through 19.2.5).

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
71.9%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 7, 2026

Advisory Details (1)

Auto-updated May 6, 2026
Patch available. Sources: github.
github Patch Available

Denial of Service Vulnerability in React Server Components · Advisory · facebook/react · GitHub

https://github.com/facebook/react/security/advisories/GHSA-rv78-f8rc-xrxh

Affected Packages

(3 across 1 ecosystem)
npm(3)
PackageVulnerable rangeFixed inDependents
react-server-dom-parcel—19.2.6—
react-server-dom-turbopack—19.2.6—
react-server-dom-webpack—19.2.6—

Data Freshness Timeline

(refreshed 11× in last 7d / 50× 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.

Showing the most recent 100 of 124 total refreshes for this CVE.

  1. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-12 05:46 UTCEPSS rescore
  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-09 19:10 UTCEPSS rescore
  5. 2026-07-08 15:15 UTCEPSS rescore
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  7. 2026-07-07 13:46 UTCEPSS rescore
  8. 2026-07-06 16:27 UTCEPSS rescore
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  10. 2026-07-06 02:23 UTCEPSS rescore
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  19. 2026-06-28 14:07 UTCEPSS rescore
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  21. 2026-06-28 04:56 UTCEPSS rescore
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  23. 2026-06-27 03:08 UTCEPSS rescore
  24. 2026-06-25 13:49 UTCEPSS rescore
  25. 2026-06-25 13:49 UTCEPSS rescore
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  1. 2026-06-24 14:05 UTCEPSS rescore
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  3. 2026-06-23 21:33 UTCEPSS rescore
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  5. 2026-06-22 14:25 UTCEPSS rescore
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  7. 2026-06-21 14:56 UTCEPSS rescore
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  9. 2026-06-21 01:59 UTCEPSS rescore
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  11. 2026-06-19 19:25 UTCEPSS rescore
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  17. 2026-06-15 17:48 UTCEPSS rescore
  18. 2026-06-15 08:07 UTCEG score recompute
  19. 2026-06-14 23:18 UTCEPSS rescore
  20. 2026-06-14 19:42 UTCEG score recompute
  21. 2026-06-14 07:27 UTCEG score recompute
  22. 2026-06-13 23:00 UTCEPSS rescore
  23. 2026-06-12 23:44 UTCEG score recompute
  24. 2026-06-12 23:12 UTCEPSS rescore
  25. 2026-06-12 23:12 UTCEPSS rescore
  26. 2026-06-12 05:30 UTCEG score recompute
  27. 2026-06-11 17:17 UTCEG score recompute
  28. 2026-06-11 14:00 UTCEPSS rescore
  29. 2026-06-11 04:30 UTCEG score recompute
  30. 2026-06-10 22:18 UTCEPSS rescore
  31. 2026-06-10 22:18 UTCEPSS rescore
  32. 2026-06-10 15:33 UTCEG score recompute
  33. 2026-06-10 13:22 UTCEPSS rescore
  34. 2026-06-10 03:19 UTCEG score recompute
  35. 2026-06-09 15:05 UTCEG score recompute
  36. 2026-06-09 02:52 UTCEG score recompute
  37. 2026-06-08 14:38 UTCEG score recompute
  38. 2026-06-08 14:17 UTCEPSS rescore
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  40. 2026-06-08 02:24 UTCEG score recompute
  41. 2026-06-07 15:25 UTCEPSS rescore
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  43. 2026-06-07 15:25 UTCEPSS rescore
  44. 2026-06-07 14:11 UTCEG score recompute
  45. 2026-06-07 01:56 UTCEG score recompute
  46. 2026-06-06 13:47 UTCEPSS rescore
  47. 2026-06-06 13:47 UTCEPSS rescore
  48. 2026-06-06 13:47 UTCEPSS rescore
  49. 2026-06-06 13:41 UTCEG score recompute
  50. 2026-06-06 01:28 UTCEG score recompute
  51. 2026-06-05 22:47 UTCEPSS rescore
  52. 2026-06-05 13:15 UTCEG score recompute
  53. 2026-06-05 06:10 UTCEPSS rescore
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  55. 2026-06-05 01:02 UTCEG score recompute
  56. 2026-06-04 13:12 UTCEPSS rescore
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  58. 2026-06-04 13:12 UTCEPSS rescore
  59. 2026-06-04 10:56 UTCEG score recompute
  60. 2026-06-03 22:43 UTCEG score recompute
  61. 2026-06-03 10:29 UTCEG score recompute
  62. 2026-06-02 22:16 UTCEG score recompute
  63. 2026-06-02 20:13 UTCEPSS rescore
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  65. 2026-06-02 09:58 UTCEG score recompute
  66. 2026-06-01 21:45 UTCEG score recompute
  67. 2026-06-01 13:51 UTCEPSS rescore
  68. 2026-06-01 13:51 UTCEPSS rescore
  69. 2026-06-01 13:51 UTCEPSS rescore
  70. 2026-06-01 09:27 UTCEG score recompute
  71. 2026-05-31 22:30 UTCEPSS rescore
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  73. 2026-05-31 00:16 UTCEPSS rescore
  74. 2026-05-31 00:16 UTCEPSS rescore
  75. 2026-05-31 00:16 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCdwisiswant0/next-16.2.4-pocs
    First seen May 7, 2026

    Next.js v16.2.4 Security PoC Collection (CVE-2026-23870, CVE-2026-44575, CVE-2026-44579, CVE-2026-44574, CVE-2026-44578, CVE-2026-44573, CVE-2026-44581, CVE-2026-44580, CVE-2026-44577, CVE-2026-44576, CVE-2026-44582, CVE-2026-44572)

    Open source ↗

Frequently asked(5)

What is CVE-2026-23870?
CVE-2026-23870 is a high vulnerability published on May 6, 2026. A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to server crashes, out-of-memory exceptions or excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel,…
When was CVE-2026-23870 disclosed?
CVE-2026-23870 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on May 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23870 actively exploited?
CVE-2026-23870 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 71.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-23870?
CVE-2026-23870 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-23870?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23870, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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