CVE-2023-28103

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 30% 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
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.2Exploit: NoneExposed: 0

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

matrix-react-sdk is a Matrix chat protocol SDK for React Javascript. In certain configurations, data sent by remote servers containing special strings in key locations could cause modifications of the Object.prototype, disrupting matrix-react-sdk functionality, causing denial of service and potentially affecting program logic. This is fixed in matrix-react-sdk 3.69.0 and users are advised to upgrade. There are no known workarounds for this vulnerability. Note this advisory is distinct from GHSA-2x9c-qwgf-94xr which refers to a similar issue.

CVSS v3
8.2
EG Score
8.2(medium)
EPSS
49.2%
KEV
Not listed

Published

March 28, 2023

Last Modified

November 21, 2024

References (4)

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
matrix-react-sdk—3.69.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 44× 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. 2026-07-11 08:25 UTCEPSS rescore
  2. 2026-07-11 08:25 UTCEPSS rescore
  3. 2026-07-09 19:08 UTCEPSS rescore
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  10. 2026-07-04 06:29 UTCEPSS rescore
  11. 2026-07-02 16:59 UTCEPSS rescore
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  13. 2026-06-30 23:21 UTCEPSS rescore
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  15. 2026-06-29 14:05 UTCEPSS rescore
  16. 2026-06-28 14:06 UTCEPSS rescore
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  18. 2026-06-28 04:54 UTCEPSS rescore
  19. 2026-06-28 01:34 UTCOSV refresh
  20. 2026-06-27 03:07 UTCEPSS rescore
  21. 2026-06-25 13:48 UTCEPSS rescore
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  25. 2026-06-23 21:31 UTCEPSS rescore
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  1. 2026-06-23 21:31 UTCEPSS rescore
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  4. 2026-06-21 14:55 UTCEPSS rescore
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  6. 2026-06-21 01:58 UTCEPSS rescore
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  8. 2026-06-19 19:24 UTCEPSS rescore
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  10. 2026-06-18 17:51 UTCEPSS rescore
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  17. 2026-06-13 22:59 UTCEPSS rescore
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  19. 2026-06-12 23:10 UTCEPSS rescore
  20. 2026-06-11 13:59 UTCEPSS rescore
  21. 2026-06-10 22:17 UTCEPSS rescore
  22. 2026-06-10 13:21 UTCEPSS rescore
  23. 2026-06-10 13:21 UTCEPSS rescore
  24. 2026-06-10 12:17 UTCOSV refresh
  25. 2026-06-08 14:15 UTCEPSS rescore
  26. 2026-06-08 14:15 UTCEPSS rescore
  27. 2026-06-07 15:23 UTCEPSS rescore
  28. 2026-06-07 15:23 UTCEPSS rescore
  29. 2026-06-06 13:46 UTCEPSS rescore
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  31. 2026-06-05 22:46 UTCEPSS rescore
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  35. 2026-06-04 13:11 UTCEPSS rescore
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  37. 2026-06-02 20:12 UTCEPSS rescore
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  39. 2026-06-02 20:12 UTCEPSS rescore
  40. 2026-06-01 13:51 UTCEPSS rescore
  41. 2026-05-31 22:29 UTCEPSS rescore
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  43. 2026-05-31 22:29 UTCEPSS rescore
  44. 2026-05-31 00:15 UTCEPSS rescore
  45. 2026-05-31 00:15 UTCEPSS rescore
  46. 2026-05-29 13:43 UTCEPSS rescore
  47. 2026-05-28 13:43 UTCEPSS rescore
  48. 2026-05-28 13:43 UTCEPSS rescore
  49. 2026-05-27 13:39 UTCEPSS rescore
  50. 2026-05-27 13:39 UTCEPSS rescore
  51. 2026-05-26 13:43 UTCEPSS rescore
  52. 2026-05-26 13:43 UTCEPSS rescore
  53. 2026-05-26 07:18 UTCEPSS rescore
  54. 2026-05-26 07:18 UTCEPSS rescore
  55. 2026-05-26 07:17 UTCEPSS rescore
  56. 2026-05-25 04:17 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-28103?
CVE-2023-28103 is a high vulnerability published on March 28, 2023. matrix-react-sdk is a Matrix chat protocol SDK for React Javascript. In certain configurations, data sent by remote servers containing special strings in key locations could cause modifications of the Object.prototype, disrupting matrix-react-sdk functionality, causing denial of service and…
When was CVE-2023-28103 disclosed?
CVE-2023-28103 was first published in the National Vulnerability Database on March 28, 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-2023-28103 actively exploited?
CVE-2023-28103 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 49.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-28103?
CVE-2023-28103 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2023-28103?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-28103, 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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