CVE-2023-45311

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.9%, top 24% 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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

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

fsevents before 1.2.11 depends on the https://fsevents-binaries.s3-us-west-2.amazonaws.com URL, which might allow an adversary to execute arbitrary code if any JavaScript project (that depends on fsevents) distributes code that was obtained from that URL at a time when it was controlled by an adversary. NOTE: some sources feel that this means that no version is affected any longer, because the URL is not controlled by an adversary.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
71.9%
KEV
Not listed

Published

October 6, 2023

Last Modified

June 17, 2026

Advisory Details (8)

Auto-updated Jun 6, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

react-immutable-proptypes/package-lock.json at ddb9fa5194b931bf7528eb4f2c0a8c3434f70edd · atlassian/react-immutable-proptypes · GitHub

https://github.com/atlassian/react-immutable-proptypes/blob/ddb9fa5194b931bf7528eb4f2c0a8c3434f70edd/package-lock.json#L153
generic

moo/package-lock.json at 56ccbdd41b493332bc2cd7a4097a5802594cdb9c · atlassian/moo · GitHub

https://github.com/atlassian/moo/blob/56ccbdd41b493332bc2cd7a4097a5802594cdb9c/package-lock.json#L1901-L1902
generic🔴 Active Exploitation

Exposure of Resource to Wrong Sphere in fsevents | CVE-2023-45311 | Snyk

https://security.snyk.io/vuln/SNYK-JS-FSEVENTS-5487987
generic

Comparing v1.2.10...v1.2.11 · fsevents/fsevents · GitHub

https://github.com/fsevents/fsevents/compare/v1.2.10...v1.2.11
generic

serverless-cloudflare-workers/package-lock.json at e95e1e9c9770ed9a3d9480c1fa73e64391268354 · cloudflare/serverless-cloudflare-workers · GitHub

https://github.com/cloudflare/serverless-cloudflare-workers/blob/e95e1e9c9770ed9a3d9480c1fa73e64391268354/package-lock.json#L737
generic

redux-grim/package-lock.json at b652f99f95fb16812336073951adc5c5a93e2c23 · cloudflare/redux-grim · GitHub

https://github.com/cloudflare/redux-grim/blob/b652f99f95fb16812336073951adc5c5a93e2c23/package-lock.json#L266-L267
generic

hugo-cloudflare-docs/package-lock.json at e0f7cfa195af8ef1bfa51a487be7d34ba298ed06 · cloudflare/hugo-cloudflare-docs · GitHub

https://github.com/cloudflare/hugo-cloudflare-docs/blob/e0f7cfa195af8ef1bfa51a487be7d34ba298ed06/package-lock.json#L494
generic

authr/ts/package-lock.json at 3f6129d97d06e61033a7f237d84e35e678db490f · cloudflare/authr · GitHub

https://github.com/cloudflare/authr/blob/3f6129d97d06e61033a7f237d84e35e678db490f/ts/package-lock.json#L1512

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
fsevents—1.2.11—

Weakness Classification(1)

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

Data Freshness Timeline

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-45311?
CVE-2023-45311 is a critical vulnerability published on October 6, 2023. fsevents before 1.2.11 depends on the https://fsevents-binaries.s3-us-west-2.amazonaws.com URL, which might allow an adversary to execute arbitrary code if any JavaScript project (that depends on fsevents) distributes code that was obtained from that URL at a time when it was controlled by an…
When was CVE-2023-45311 disclosed?
CVE-2023-45311 was first published in the National Vulnerability Database on October 6, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-45311 actively exploited?
CVE-2023-45311 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-2023-45311?
CVE-2023-45311 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-45311?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-45311, 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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