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CVE-2026-10043

MosaicML Composer Deserialization of Untrusted Data Remote Code Execution Vulnerability

CVSS 7.8 HIGHEPSS 0.3%CWE-502
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 7.8EPSS 0.3%KEV nãoPoC Nuclei Metasploit Patch referenciado
Lifecycle
24 Jun 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
MosaicML · Composer

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