CVE-2023-52079

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.7% (50th 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, nvd
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

msgpackr is a fast MessagePack NodeJS/JavaScript implementation. Prior to 1.10.1, when decoding user supplied MessagePack messages, users can trigger stuck threads by crafting messages that keep the decoder stuck in a loop. The fix is available in v1.10.1. Exploits seem to require structured cloning, replacing the 0x70 extension with your own (that throws an error or does something other than recursive referencing) should mitigate the issue.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
30
EG Risk 30/100CISA 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
Severity65% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.7%
EPSS %ILE
51st
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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

Exploitation none (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

December 28, 2023

Last Modified

June 17, 2026

References (4)

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
msgpackr—
  • every version up to 1.10.1: fixed in 1.10.1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 31× 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 192 total refreshes for this CVE.

  1. 2026-10-10 19:58 UTCEPSS rescore
  2. 2026-10-09 20:05 UTCEPSS rescore
  3. 2026-10-08 17:06 UTCEPSS rescore
  4. 2026-10-07 23:46 UTCEPSS rescore
  5. 2026-10-06 15:15 UTCEPSS rescore
  6. 2026-10-05 17:41 UTCEPSS rescore
  7. 2026-10-04 23:20 UTCEPSS rescore
  8. 2026-10-03 14:23 UTCEPSS rescore
  9. 2026-10-01 19:48 UTCEPSS rescore
  10. 2026-10-01 19:48 UTCEPSS rescore
  11. 2026-09-30 16:36 UTCEG score recompute
  12. 2026-09-30 15:01 UTCEPSS rescore
  13. 2026-09-30 15:01 UTCEPSS rescore
  14. 2026-09-29 15:17 UTCEPSS rescore
  15. 2026-09-28 13:49 UTCEPSS rescore
  16. 2026-09-26 00:22 UTCEPSS rescore
  17. 2026-09-24 14:01 UTCEPSS rescore
  18. 2026-09-24 14:01 UTCEPSS rescore
  19. 2026-09-23 13:46 UTCEPSS rescore
  20. 2026-09-22 12:15 UTCOSV refresh
  21. 2026-09-20 20:14 UTCEPSS rescore
  22. 2026-09-20 20:14 UTCEPSS rescore
  23. 2026-09-18 19:26 UTCEPSS rescore
  24. 2026-09-16 14:06 UTCEPSS rescore
  25. 2026-09-16 05:11 UTCEPSS rescore
Show 75 more
  1. 2026-09-16 05:11 UTCEPSS rescore
  2. 2026-09-15 03:08 UTCEPSS rescore
  3. 2026-09-13 16:45 UTCEPSS rescore
  4. 2026-09-12 14:58 UTCEPSS rescore
  5. 2026-09-11 14:51 UTCEPSS rescore
  6. 2026-09-11 09:34 UTCEPSS rescore
  7. 2026-09-08 21:58 UTCEPSS rescore
  8. 2026-09-07 15:59 UTCEPSS rescore
  9. 2026-09-06 13:46 UTCEPSS rescore
  10. 2026-09-05 15:26 UTCEPSS rescore
  11. 2026-09-04 13:58 UTCEPSS rescore
  12. 2026-09-04 05:04 UTCEPSS rescore
  13. 2026-09-03 09:29 UTCOSV refresh
  14. 2026-09-02 14:10 UTCEPSS rescore
  15. 2026-09-01 13:52 UTCEPSS rescore
  16. 2026-09-01 04:36 UTCEPSS rescore
  17. 2026-08-30 19:15 UTCEPSS rescore
  18. 2026-08-30 01:20 UTCEPSS rescore
  19. 2026-08-28 21:39 UTCEPSS rescore
  20. 2026-08-27 14:23 UTCEPSS rescore
  21. 2026-08-26 14:44 UTCEPSS rescore
  22. 2026-08-25 13:46 UTCEPSS rescore
  23. 2026-08-24 14:14 UTCEPSS rescore
  24. 2026-08-23 00:17 UTCEPSS rescore
  25. 2026-08-21 23:47 UTCEPSS rescore
  26. 2026-08-20 22:53 UTCEPSS rescore
  27. 2026-08-19 17:02 UTCEPSS rescore
  28. 2026-08-19 17:02 UTCEPSS rescore
  29. 2026-08-18 13:46 UTCEPSS rescore
  30. 2026-08-17 13:45 UTCEPSS rescore
  31. 2026-08-16 22:56 UTCOSV refresh
  32. 2026-08-16 14:54 UTCEPSS rescore
  33. 2026-08-16 02:12 UTCEPSS rescore
  34. 2026-08-15 01:28 UTCEPSS rescore
  35. 2026-08-13 21:58 UTCEPSS rescore
  36. 2026-08-12 13:49 UTCEPSS rescore
  37. 2026-08-11 13:40 UTCEPSS rescore
  38. 2026-08-10 23:57 UTCEPSS rescore
  39. 2026-08-09 13:44 UTCEPSS rescore
  40. 2026-08-09 13:44 UTCEPSS rescore
  41. 2026-08-08 16:35 UTCEPSS rescore
  42. 2026-08-07 16:25 UTCEPSS rescore
  43. 2026-08-06 13:45 UTCEPSS rescore
  44. 2026-08-05 19:15 UTCEPSS rescore
  45. 2026-08-04 15:07 UTCEPSS rescore
  46. 2026-08-04 10:35 UTCEPSS rescore
  47. 2026-08-03 10:34 UTCEPSS rescore
  48. 2026-08-03 10:34 UTCEPSS rescore
  49. 2026-08-02 02:25 UTCEPSS rescore
  50. 2026-08-02 02:25 UTCEPSS rescore
  51. 2026-08-01 17:06 UTCOSV refresh
  52. 2026-08-01 04:14 UTCEPSS rescore
  53. 2026-07-30 16:26 UTCEPSS rescore
  54. 2026-07-30 16:26 UTCEPSS rescore
  55. 2026-07-30 01:28 UTCEPSS rescore
  56. 2026-07-28 15:34 UTCEPSS rescore
  57. 2026-07-28 15:34 UTCEPSS rescore
  58. 2026-07-27 14:10 UTCEPSS rescore
  59. 2026-07-26 14:52 UTCEPSS rescore
  60. 2026-07-25 14:16 UTCEPSS rescore
  61. 2026-07-24 14:16 UTCEPSS rescore
  62. 2026-07-24 14:16 UTCEPSS rescore
  63. 2026-07-23 14:16 UTCEPSS rescore
  64. 2026-07-23 02:29 UTCEG score recompute
  65. 2026-07-22 23:15 UTCEG score recompute▼ 0.30
  66. 2026-07-22 14:06 UTCEPSS rescore
  67. 2026-07-21 15:23 UTCEPSS rescore
  68. 2026-07-21 15:23 UTCEPSS rescore
  69. 2026-07-20 17:06 UTCEPSS rescore
  70. 2026-07-19 14:29 UTCEPSS rescore
  71. 2026-07-19 14:29 UTCEPSS rescore
  72. 2026-07-19 02:27 UTCEPSS rescore
  73. 2026-07-18 10:03 UTCEPSS rescore
  74. 2026-07-18 10:03 UTCEPSS rescore
  75. 2026-07-16 17:01 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2023-52079?
CVE-2023-52079 is a medium vulnerability published on December 28, 2023. msgpackr is a fast MessagePack NodeJS/JavaScript implementation. Prior to 1.10.1, when decoding user supplied MessagePack messages, users can trigger stuck threads by crafting messages that keep the decoder stuck in a loop. The fix is available in v1.10.1. Exploits seem to require structured…
When was CVE-2023-52079 disclosed?
CVE-2023-52079 was first published on December 28, 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-2023-52079 actively exploited?
CVE-2023-52079 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (51st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-52079?
CVE-2023-52079 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2023-52079?
A fix for CVE-2023-52079 is available: update to the fixed version the vendor names in its advisory.

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