CVE-2026-115726 Aider-AI CVE debrief

Who should care

Defenders responsible for Aider installations, especially in environments where untrusted repositories are used, should assess exposure and prioritize remediation. This includes reviewing and updating vulnerable Aider installations, restricting access to repository settings, and monitoring for suspicious activity. Security teams and vulnerability management teams should also review the vulnerability and plan for remediation.

Why it matters

CVE-2026-115726 is a high-severity vulnerability in Aider that allows attackers to execute shell commands. Defenders should prioritize verifying and remediating vulnerable installations.

• Verify and remediate vulnerable Aider installations to prevent command execution
• Restrict access to repository .aider.conf.yml settings to trusted users
• Monitor Aider installations for suspicious activity

Technical summary

The CVE-2026-115726 vulnerability in Aider through 0.86.2 allows attackers to execute shell commands by committing a malicious .aider.conf.yml file. The vulnerability is caused by the auto-loading of the .aider.conf.yml file without a trust prompt, allowing attackers to set notifications-command or editor values that are executed via subprocess with shell=True. This can lead to command execution with the victim's privileges. The vulnerability affects Aider installations, especially in environments where untrusted repositories are used.

Defensive priority

Defenders should prioritize verifying and remediating vulnerable Aider installations, especially in environments where untrusted repositories are used.

Recommended defensive actions

• Verify Aider installations for vulnerable versions and update to a fixed version if available
• Restrict access to repository .aider.conf.yml settings to trusted users
• Monitor Aider installations for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the command execution vulnerability in Aider through 0.86.2. The vulnerability allows attackers to run shell commands by committing a malicious .aider.conf.yml file. The source item includes references to the affected code and issue tracking.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.