CVE-2023-30591

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2023-09-29. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
7.5
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 54%
CISA-KEV: Not listedEPSS: 54%CVSS: 7.5Exploit: NoneExposed: 0

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

Denial-of-service in NodeBB <= v2.8.10 allows unauthenticated attackers to trigger a crash, when invoking eventName.startsWith() or eventName.toString(), while processing Socket.IO messages via crafted Socket.IO messages containing array or object type for the event name respectively.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
—
EPSS
98.9%
KEV
Not listed

Published

September 29, 2023

Last Modified

November 21, 2024

References (8)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 39× 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. 2026-07-22 23:09 UTCEG score recompute
  2. 2026-07-22 14:06 UTCEPSS rescore
  3. 2026-07-22 14:06 UTCEPSS rescore
  4. 2026-07-21 15:23 UTCEPSS rescore
  5. 2026-07-20 17:06 UTCEPSS rescore
  6. 2026-07-19 14:29 UTCEPSS rescore
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  10. 2026-07-16 17:01 UTCEPSS rescore
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  12. 2026-07-15 16:56 UTCEPSS rescore
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  14. 2026-07-15 08:49 UTCOSV refresh
  15. 2026-07-15 01:58 UTCEPSS rescore
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  17. 2026-07-13 22:28 UTCEPSS rescore
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  1. 2026-07-05 02:28 UTCEPSS rescore
  2. 2026-07-02 16:59 UTCEPSS rescore
  3. 2026-07-01 15:04 UTCEPSS rescore
  4. 2026-06-30 23:21 UTCEPSS rescore
  5. 2026-06-30 23:21 UTCEPSS rescore
  6. 2026-06-28 04:54 UTCEPSS rescore
  7. 2026-06-27 09:04 UTCOSV refresh
  8. 2026-06-27 03:07 UTCEPSS rescore
  9. 2026-06-25 13:48 UTCEPSS rescore
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  11. 2026-06-24 14:03 UTCEPSS rescore
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  19. 2026-06-21 01:58 UTCEPSS rescore
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  21. 2026-06-19 19:24 UTCEPSS rescore
  22. 2026-06-19 19:24 UTCEPSS rescore
  23. 2026-06-18 17:51 UTCEPSS rescore
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  25. 2026-06-17 17:51 UTCEPSS rescore
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  29. 2026-06-15 17:47 UTCEPSS rescore
  30. 2026-06-14 23:16 UTCEPSS rescore
  31. 2026-06-13 22:59 UTCEPSS rescore
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  33. 2026-06-12 23:10 UTCEPSS rescore
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  35. 2026-06-10 22:17 UTCEPSS rescore
  36. 2026-06-10 13:21 UTCEPSS rescore
  37. 2026-06-10 13:21 UTCEPSS rescore
  38. 2026-06-09 19:47 UTCOSV refresh
  39. 2026-06-08 14:15 UTCEPSS rescore
  40. 2026-06-08 14:15 UTCEPSS rescore
  41. 2026-06-07 15:23 UTCEPSS rescore
  42. 2026-06-07 15:23 UTCEPSS rescore
  43. 2026-06-06 13:46 UTCEPSS rescore
  44. 2026-06-06 13:46 UTCEPSS rescore
  45. 2026-06-05 22:46 UTCEPSS rescore
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  47. 2026-06-05 06:09 UTCEPSS rescore
  48. 2026-06-05 06:09 UTCEPSS rescore
  49. 2026-06-04 13:11 UTCEPSS rescore
  50. 2026-06-04 13:11 UTCEPSS rescore
  51. 2026-06-02 20:12 UTCEPSS rescore
  52. 2026-06-02 20:12 UTCEPSS rescore
  53. 2026-06-02 20:12 UTCEPSS rescore
  54. 2026-06-01 13:51 UTCEPSS rescore
  55. 2026-05-31 22:29 UTCEPSS rescore
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  58. 2026-05-31 00:15 UTCEPSS rescore
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  60. 2026-05-29 13:43 UTCEPSS rescore
  61. 2026-05-28 13:43 UTCEPSS rescore
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  63. 2026-05-27 13:39 UTCEPSS rescore
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  65. 2026-05-26 13:43 UTCEPSS rescore
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  67. 2026-05-26 07:18 UTCEPSS rescore
  68. 2026-05-26 07:18 UTCEPSS rescore
  69. 2026-05-26 07:17 UTCEPSS rescore
  70. 2026-05-24 16:51 UTCEG score recompute
  71. 2026-05-24 16:51 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-30591?
CVE-2023-30591 is a high vulnerability published on September 29, 2023. Denial-of-service in NodeBB <= v2.8.10 allows unauthenticated attackers to trigger a crash, when invoking eventName.startsWith() or eventName.toString(), while processing Socket.IO messages via crafted Socket.IO messages containing array or object type for the event name respectively.
When was CVE-2023-30591 disclosed?
CVE-2023-30591 was first published in the National Vulnerability Database on September 29, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-30591 actively exploited?
CVE-2023-30591 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-30591?
CVE-2023-30591 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-30591?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-30591, 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.

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