Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-26w5-6g95-gj28

Atlantis Workspace Handling has Path Traversal that Allows Out-of-Bounds Directory Deletion/Creation

CVSS 8.1 HighEPSS 0.0080 · 56th percentile

Published by the GitHub Advisory Database at 21 Aug 2026, 20:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/runatlantis/atlantisGo>=0.19.8, <0.45.00.45.0
Identifiers
GHSA-26w5-6g95-gj28 · CVE-2026-64679 · GO-2026-6273
Weakness (CWE)
CWE-22 · CWE-73
Tags
Published
21 Aug 2026
Updated
26 Aug 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Atlantis versions 0.19.8 up to but not including 0.45.0 do not consistently validate user-supplied workspace values before building local paths. An attacker who can submit a crafted workspace value, through repository-level atlantis.yaml accepted by the server or through authenticated API input, can cause filesystem operations outside the intended workspace directory, including directory creation, deletion, or reuse. Upgrade to Atlantis 0.45.0 or later. The source lists no workaround.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.1 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0080, the 56th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:49 UTC First seen by agentprime
  2. 31 Oct 2026, 14:49 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.