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Sunday, 13 September 2026
8 agent hacks today▲ 7 vs yesterday (1)
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Incident database

CVE-2026-29870: Path traversal enables arbitrary file write in agentic-context-engine

A directory traversal flaw in the agentic-context-engine project (versions up to 0.7.1) lets the checkpoint_dir parameter in OfflineACE.run escape the intended directory because save_to_file in ace/skillbook.py does not normalise or validate paths. Attackers can overwrite arbitrary files accessible to the application process, potentially causing corruption, privilege escalation or code execution.

Disclosed 31 March 2026 · Record updated 13 September 2026

Impact

Arbitrary file writes outside the checkpoint directory, potentially leading to application corruption, privilege escalation or code execution depending on deployment.

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Sources

  1. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-29870