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Windmill CVE-2026-29059

MEDIUM
Path Traversal (CWE-22)
2026-03-06 security-advisories@github.com
Path Traversal Windmill
6.9
CVSS 4.0 · GitHub Advisory
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Vulnerability Assessment

Weakness
CWE
CWE-22
MITRE ATT&CK

2 techniques across 2 tactics: Discovery, Collection

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

Exploitation no authentication required.
Exploit ScenarioDerived

An attacker without authentication could exploit this vulnerability to compromise the affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Windmill is an open-source developer platform for internal code: APIs, background jobs, workflows and UIs. Prior to version 1.603.3, an unauthenticated path traversal vulnerability exists in Windmill's get_log_file endpoint "(/api/w/{workspace}/jobs_u/get_log_file/{filename})".

RemediationAI

Fixed in version 1.603.3.. Validate and sanitize file path inputs. Use allowlists.

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Technical ContextAI · show details

Classified as CWE-22 (Path Traversal). Affects workflows and UIs.. Windmill is an open-source developer platform for internal code: APIs, background jobs, workflows and UIs. Prior to version 1.603.3, an unauthenticated path traversal vulnerability exists in Windmill's get_log_file endpoint "(/api/w/{workspace}/jobs_u/get_log_file/{filename})". The filename parameter is concatenated into a file path without sanitization, allowing an attacker to read arbitrary files on the server using ../ sequences. This issue has been patched in version 1.603.3.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

GitHub Advisory PRIMARY 6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
Low
Vulnerable system: Integrity
None
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

DescriptionGitHub Advisory

Windmill is an open-source developer platform for internal code: APIs, background jobs, workflows and UIs. Prior to version 1.603.3, an unauthenticated path traversal vulnerability exists in Windmill's get_log_file endpoint "(/api/w/{workspace}/jobs_u/get_log_file/{filename})". The filename parameter is concatenated into a file path without sanitization, allowing an attacker to read arbitrary files on the server using ../ sequences. This issue has been patched in version 1.603.3.

Articles & Coverage 1

POC CVE-2026-29059: Unauthenticated RCE in Windmill & Nextcloud Flow via Path Traversal Apr 07, 2026

Threat Intelligence Overview

EPSS Score
0.1%
Top 68% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium
NVD CVE.org EPSS POC (1) GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

54
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Path Traversal HIGH

Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.

Affected Products (CPE)GitHub Advisory

cpe:2.3:a:windmill:windmill:*:*:*:*:*:*:*:*

More in Windmill

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Authorization bypass in Windmill 1.56.0-1.614.0 enables Operator role users to escalate privileges to remote code execut
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Cross-tenant DNS and TLS poisoning in Windmill versions prior to 1.703.2 allows authenticated low-privilege users to wri
CVE-2026-33881 HIGH
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JavaScript code injection in Windmill's NativeTS executor allows workspace administrators to achieve remote code executi
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Authenticated workspace members in Windmill through 1.783.0 can exfiltrate plaintext resource credentials stored in lega
CVE-2026-72541 MEDIUM
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Broken authorization on the update_resource_type endpoint in Windmill through 1.783.0 allows any authenticated workspace
CVE-2026-72542 MEDIUM
5.4 Aug 11

Missing authorization controls in Windmill through version 1.783.0 expose job metrics and progress endpoints to any auth
CVE-2026-26964 LOW
2.7 Feb 20

Windmill is an open-source developer platform for internal code: APIs, background jobs, workflows and UIs. Versions 1.63

Same weakness CWE-22 – Path Traversal

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CVE-2019-3396 CRITICAL POC
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CVE-2019-19781 CRITICAL POC
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CVE-2020-5902 CRITICAL POC
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CVE-2021-21972 CRITICAL POC
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CVE-2021-40444 HIGH POC
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CVE-2022-41352 CRITICAL POC
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CVE-2021-27065 HIGH POC
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CVE-2019-11510 CRITICAL POC
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Same technique Path Traversal

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CVE-2018-20250 HIGH POC
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CVE-2022-37042 CRITICAL POC
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CVE-2025-64446 CRITICAL POC
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References

Advisories & patches
REF https://github.com/Chocapikk/Windfall REF https://github.com/windmill-labs/windmill/releases/tag/v1.603.3 REF https://github.com/windmill-labs/windmill/security/advisories/GHSA-24fr-44f8-fqwg

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