CVE-2026-10043Disclosure

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-502

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-29: 1Technical Details · 2026-06-29: 106-29
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
Full discourse1 post
  • SystemTek - Technology news website@SystemTek_UK
    Disclosure

    MosaicML Composer Deserialization of Untrusted Data Remote Code Execution Vulnerability (CVE-2026-10043) https://www.systemtek.co.uk/2026/06/mosaicml-composer-deserialization-of-untrusted-data-remote-code-execution-vulnerability-cve-2026-10043/ via @SystemTek_UK

    Post summary

    A new deserialization remote code execution vulnerability, CVE‑2026‑10043, has been publicly disclosed for MosaicML Composer, with details available at the referenced link.

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