CVE-2026-10043

HIGH
MEDIUM Priority: 0.04 BB Relevance: 41/100
Published: 2026-06-24 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: High

Description

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.

Weakness Classification (1)

Bug Bounty Relevance

41 / 100
✓ No authentication
✓ Low complexity

CVSS Score

7.8 / 10.0 v3.0
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.55%
Raw Score 0.005470
Percentile 45.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00547
2026-10-28
0.00547

Intelligence Sources

nvd ref →