CVE-2026-85674
aider 0.86.2 Remote Code Execution via .aider.conf.yml
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
aider (aider-chat) automatically loads a .aider.conf.yml configuration file from the root of the git repository it is launched in. A crafted repository can set test-cmd (executed at startup) or lint-cmd (executed on the first file edit), which aider runs through a shell (subprocess with shell=True) without any user confirmation, LLM interaction, or API key. Consequently, a user who clones and runs aider inside an attacker-supplied repository achieves arbitrary command execution on their machine. The behavior is long-standing and was confirmed on 0.86.3.dev (current main).
| CWE | CWE-94 |
| Vendor | aider-ai |
| Product | aider |
| Published | Sep 4, 2026 |
| Last Updated | Sep 10, 2026 |
Stay Ahead of the Next One
Get instant alerts for aider-ai aider
Be the first to know when new high vulnerabilities affecting aider-ai aider are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Aider-AI / aider
0 ≤ 0.86.2
References
Credits
George Chen