CVE-2026-30631 bytebot-ai CVE debrief

Who should care

Security teams and developers using bytebot-ai should be aware of this critical vulnerability and take immediate action to mitigate the risk. This includes reviewing and updating bytebot-ai to the latest version, implementing input validation and sanitization for the `computer_write_file` function, and monitoring for suspicious activity.

Technical summary

The vulnerability has a CVSS score of 9.8 and is classified as CRITICAL with a CVSS vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. It is categorized under CWE-78, which involves improper neutralization of special elements used in an OS command. The vulnerability allows attackers to execute arbitrary code via a crafted path to `computer_write_file`. The affected product is bytebot-ai, specifically in commit 3d37894ce07ef8d8b40adc7fd309ad96c2a71313 (2025-09-11).

Defensive priority

High

Recommended defensive actions

• Review and update bytebot-ai to the latest version
• Implement input validation and sanitization for the `computer_write_file` function
• Monitor for suspicious activity and implement logging and auditing
• Consider implementing compensating controls such as Web Application Firewalls (WAFs)
• Verify and validate all user input
• Perform a thorough review of the affected system's configuration and ensure that it aligns with security best practices
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The vulnerability was discovered in commit 3d37894ce07ef8d8b40adc7fd309ad96c2a71313 (2025-09-11). The CVE record was published on 2026-07-21T21:16:49.370Z and has not been modified since then. The NVD entry is currently Deferred. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability. Defenders should verify affected deployments and review official advisories for specific guidance.

Official resources