CVE-2026-64679Public exploitNetwork attack vector

Directory integrity loss via workspace path traversal

Published Aug 21, 2026 · Updated Aug 25, 2026

Path traversal in Atlantis 0.19.8 through 0.44.1 allows remote authenticated users to alter or delete writable directories. Workspace handling joins unvalidated traversal segments from atlantis.yaml or /api/plan input into local paths before calling directory creation or recursive removal operations. Reachability requires accepted repository configuration or authenticated API access, and impact is bounded by the Atlantis process's writable paths.

CVSS severity8.1
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Atlantis 0.19.8 through 0.44.1 allows remote authenticated users to alter or delete writable directories. Workspace handling joins unvalidated traversal segments from atlantis.yaml or /api/plan input into local paths before calling directory creation or recursive removal operations. Reachability requires accepted repository configuration or authenticated API access, and impact is bounded by the Atlantis process's writable paths.

The record

CVE
CVE-2026-64679
Published
Aug 21, 2026
Updated
Aug 25, 2026
Vendor
runatlantis
Product
Atlantis
Classifications
CWE-22, CWE-73, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.19.8, < 0.45.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

runatlantis · Atlantisversion=>= 0.19.8, < 0.45.0

Published CVSS scores

8.1GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-73External Control of File Name or Path
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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