CVE-2026-64679: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in runatlantis atlantis
Description
CVE-2026-64679 is a path traversal vulnerability in the Atlantis application, a self-hosted Go service for Terraform pull request automation. Versions from 0.19.8 up to but not including 0.45.0 improperly validate user-controlled workspace names, allowing directory traversal outside intended workspace directories. This can lead to unauthorized filesystem operations such as creating or deleting directories with the privileges of the Atlantis process, potentially causing integrity loss or denial of service. The issue is fixed in version 0.45.0.
CVSS v3.1
Score 8.1high
Affected software
runatlantis
atlantis
pkg:golang/github.com/runatlantis/atlantisRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Atlantis versions >=0.19.8 and <0.45.0 do not consistently validate workspace values supplied via repository-level atlantis.yaml configuration or authenticated /api/plan input. This allows path traversal segments to escape the intended workspace directory, causing filesystem operations (os.RemoveAll, os.MkdirAll) to affect out-of-bounds directories. These operations occur before Terraform rejects the invalid workspace name, enabling attackers to create, delete, or reuse writable paths with Atlantis process privileges. The vulnerability is addressed in version 0.45.0.
Potential Impact
An attacker with the ability to supply workspace names can cause the Atlantis process to perform unauthorized filesystem operations outside the intended directory scope. This can result in integrity loss by modifying or deleting files/directories or denial of service by disrupting workspace preparation. The vulnerability does not affect confidentiality but impacts integrity and availability.
Mitigation Recommendations
Upgrade Atlantis to version 0.45.0 or later, where this path traversal vulnerability is fixed. No other mitigations are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-20T17:12:12.892Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a88b714acd9273b49b41691
Added to database: 08/21/2026, 20:37:40 UTC
Last enriched: 09/10/2026, 17:06:27 UTC
Last updated: 10/05/2026, 18:48:21 UTC
Views: 64
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.