CVE-2026-115726: Aider through 0.86.2 Command Execution via Repository .aider.conf.yml Settings

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-23 · updated 2026-10-29
Weakness: CWE-78

Description

Aider through 0.86.2 contains a command execution vulnerability that allows attackers to run shell commands by committing a malicious .aider.conf.yml that is auto-loaded without a trust prompt. Attackers can set notifications-command or editor values that are executed via subprocess with shell=True after model replies or /editor use, running commands with the victim's privileges.

Affected products

Aider-AI Aider: through 0.86.2

References

https://github.com/Aider-AI/aider/blob/v0.86.2/aider/editor.py#L89-L134
https://github.com/Aider-AI/aider/blob/v0.86.2/aider/io.py#L1088-L1094
https://github.com/Aider-AI/aider/blob/v0.86.2/aider/main.py#L464-L479
https://github.com/Aider-AI/aider/issues/5885
https://www.vulncheck.com/advisories/aider-through-0.86.2-command-execution-via-repository-aider-conf-yml-settings
https://github.com/Aider-AI/aider/issues/5885

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