VulnerabilityAwaiting Analysis

CVE-2026-29870

A directory traversal vulnerability in the agentic-context-engine project versions up to 0.7.1 allows arbitrary file writes via the checkpoint_dir parameter in OfflineACE.run.

HIGH 7.6EPSS 0.58%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A directory traversal vulnerability in the agentic-context-engine project versions up to 0.7.1 allows arbitrary file writes via the checkpoint_dir parameter in OfflineACE.run. The save_to_file method in ace/skillbook.py fails to normalize or validate filesystem paths, allowing traversal sequences to escape the intended checkpoint directory. This vulnerability allows attackers to overwrite arbitrary files accessible to the application process, potentially leading to application corruption, privilege escalation, or code execution depending on the deployment context.

CVSS 3.1: 7.6 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
EPSS: 0.58% probability · 46th percentile
CISA KEV: Not listed
Weakness: CWE-22
Source: cve@mitre.org

References

https://github.com/lilmingwa13/security-research/blob/main/CVE-2026-29870.md

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.