CVE-2026-10043

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

MosaicML Composer Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of MosaicML Composer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of checkpoints. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27990.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

June 24, 2026

Last Modified

June 25, 2026

Advisory Details (2)

Auto-updated Jun 25, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

ZDI-26-384 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-26-384/
github_commit

commit 6405188805a0 (mosaicml/composer)

Fix landed in mosaicml/composer commit 6405188805a0 — awaiting tagged release

https://github.com/mosaicml/composer/commit/6405188805a0054b4551ec49e4919c54c971d0e8

Vendor Advisories for CVE-2026-10043(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 77× 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. 2026-07-27 03:00 UTCGHSA enrichment
  2. 2026-07-26 15:21 UTCEG score recompute
  3. 2026-07-26 15:21 UTCGHSA enrichment
  4. 2026-07-26 14:54 UTCEPSS rescore
  5. 2026-07-26 14:54 UTCEPSS rescore
  6. 2026-07-25 14:17 UTCEPSS rescore
  7. 2026-07-24 14:17 UTCEPSS rescore
  8. 2026-07-23 14:18 UTCEPSS rescore
  9. 2026-07-23 03:04 UTCEG score recompute
  10. 2026-07-22 14:08 UTCEPSS rescore
  11. 2026-07-21 15:24 UTCEPSS rescore
  12. 2026-07-20 17:08 UTCEPSS rescore
  13. 2026-07-19 14:30 UTCEPSS rescore
  14. 2026-07-19 02:28 UTCEPSS rescore
  15. 2026-07-18 10:04 UTCEPSS rescore
  16. 2026-07-16 22:53 UTCGHSA enrichment
  17. 2026-07-16 17:02 UTCEPSS rescore
  18. 2026-07-16 11:16 UTCGHSA enrichment
  19. 2026-07-15 23:38 UTCGHSA enrichment
  20. 2026-07-15 16:57 UTCEPSS rescore
  21. 2026-07-15 12:01 UTCGHSA enrichment
  22. 2026-07-15 02:00 UTCEPSS rescore
  23. 2026-07-15 00:24 UTCGHSA enrichment
  24. 2026-07-14 12:46 UTCGHSA enrichment
  25. 2026-07-14 01:09 UTCGHSA enrichment
Show 60 more
  1. 2026-07-13 22:30 UTCEPSS rescore
  2. 2026-07-13 13:32 UTCGHSA enrichment
  3. 2026-07-13 06:12 UTCEPSS rescore
  4. 2026-07-13 01:55 UTCGHSA enrichment
  5. 2026-07-12 14:18 UTCGHSA enrichment
  6. 2026-07-12 05:46 UTCEPSS rescore
  7. 2026-07-12 02:42 UTCGHSA enrichment
  8. 2026-07-11 15:00 UTCGHSA enrichment
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-11 03:23 UTCGHSA enrichment
  11. 2026-07-10 15:47 UTCGHSA enrichment
  12. 2026-07-10 03:46 UTCGHSA enrichment
  13. 2026-07-09 19:10 UTCEPSS rescore
  14. 2026-07-09 16:05 UTCGHSA enrichment
  15. 2026-07-09 04:22 UTCGHSA enrichment
  16. 2026-07-08 16:33 UTCGHSA enrichment
  17. 2026-07-08 04:57 UTCGHSA enrichment
  18. 2026-07-07 16:52 UTCGHSA enrichment
  19. 2026-07-07 13:46 UTCEPSS rescore
  20. 2026-07-07 03:07 UTCGHSA enrichment
  21. 2026-07-06 16:27 UTCEPSS rescore
  22. 2026-07-06 15:28 UTCGHSA enrichment
  23. 2026-07-06 03:46 UTCGHSA enrichment
  24. 2026-07-06 02:23 UTCEPSS rescore
  25. 2026-07-05 16:08 UTCGHSA enrichment
  26. 2026-07-05 04:30 UTCGHSA enrichment
  27. 2026-07-05 02:30 UTCEPSS rescore
  28. 2026-07-05 02:30 UTCEPSS rescore
  29. 2026-07-04 16:50 UTCGHSA enrichment
  30. 2026-07-04 06:31 UTCEPSS rescore
  31. 2026-07-04 04:51 UTCGHSA enrichment
  32. 2026-07-03 17:12 UTCGHSA enrichment
  33. 2026-07-03 05:35 UTCGHSA enrichment
  34. 2026-07-02 17:58 UTCGHSA enrichment
  35. 2026-07-02 06:21 UTCGHSA enrichment
  36. 2026-07-01 18:44 UTCGHSA enrichment
  37. 2026-07-01 15:06 UTCEPSS rescore
  38. 2026-07-01 15:06 UTCEPSS rescore
  39. 2026-07-01 07:08 UTCGHSA enrichment
  40. 2026-06-30 23:22 UTCEPSS rescore
  41. 2026-06-30 19:31 UTCGHSA enrichment
  42. 2026-06-30 07:55 UTCGHSA enrichment
  43. 2026-06-29 20:19 UTCGHSA enrichment
  44. 2026-06-29 14:06 UTCEPSS rescore
  45. 2026-06-29 08:42 UTCGHSA enrichment
  46. 2026-06-28 21:06 UTCGHSA enrichment
  47. 2026-06-28 14:07 UTCEPSS rescore
  48. 2026-06-28 09:29 UTCGHSA enrichment
  49. 2026-06-28 04:56 UTCEPSS rescore
  50. 2026-06-28 04:56 UTCEPSS rescore
  51. 2026-06-27 21:53 UTCGHSA enrichment
  52. 2026-06-27 10:16 UTCGHSA enrichment
  53. 2026-06-27 03:08 UTCEPSS rescore
  54. 2026-06-26 22:38 UTCGHSA enrichment
  55. 2026-06-26 10:59 UTCGHSA enrichment
  56. 2026-06-25 23:20 UTCGHSA enrichment
  57. 2026-06-25 13:49 UTCEPSS rescore
  58. 2026-06-25 11:43 UTCGHSA enrichment
  59. 2026-06-25 00:07 UTCEG score recompute
  60. 2026-06-25 00:03 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-10043?
CVE-2026-10043 is a high vulnerability published on June 24, 2026. MosaicML Composer Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of MosaicML Composer. User interaction is required to exploit this vulnerability in that the target must visit a…
When was CVE-2026-10043 disclosed?
CVE-2026-10043 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-10043 actively exploited?
CVE-2026-10043 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.4% of all scored CVEs.
What is the CVSS score of CVE-2026-10043?
CVE-2026-10043 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-10043?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-10043, 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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