NixOS Nix up to 2.34.6 absolute path traversal

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in NixOS Nix up to 2.34.6. This affects an unknown part. Such manipulation leads to absolute path traversal. This vulnerability is listed as CVE-2026-44029. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in NixOS Nix up to 2.34.6. It has been rated as critical. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a absolute path traversal vulnerability. Using CWE to declare the problem leads to CWE-36. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize absolute path sequences such as "/abs/path" that can resolve to a location that is outside of that directory. Impacted is integrity, and availability. CVE summarizes:

An issue was discovered in Nix before 2.34.7. Writing to arbitrary files can occur via "nix-prefetch-url --unpack" or "nix store prefetch-file --unpack" directory traversal. The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 (introduced in 2.24.7);

The advisory is shared for download at discourse.nixos.org. This vulnerability is handled as CVE-2026-44029 since 05/05/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability scanner Nessus provides a plugin with the ID 312235 (Linux Distros Unpatched Vulnerability : CVE-2026-44029), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.28.7, 2.29.4, 2.30.5, 2.31.5, 2.32.8, 2.33.6 or 2.34.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (312235). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• NixOS

Name

• Nix

Version

• 2.28.0
• 2.28.1
• 2.28.2
• 2.28.3
• 2.28.4
• 2.28.5
• 2.28.6
• 2.29.0
• 2.29.1
• 2.29.2
• 2.29.3
• 2.30.0
• 2.30.1
• 2.30.2
• 2.30.3
• 2.30.4
• 2.31.0
• 2.31.1
• 2.31.2
• 2.31.3
• 2.31.4
• 2.32.0
• 2.32.1
• 2.32.2
• 2.32.3
• 2.32.4
• 2.32.5
• 2.32.6
• 2.32.7
• 2.33.0
• 2.33.1
• 2.33.2
• 2.33.3
• 2.33.4
• 2.33.5
• 2.34.0
• 2.34.1
• 2.34.2
• 2.34.3
• 2.34.4
• 2.34.5
• 2.34.6

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (MITRE): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Absolute path traversal
CWE: CWE-36 / CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 312235
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-44029

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Nix 2.28.7/2.29.4/2.30.5/2.31.5/2.32.8/2.33.6/2.34.7

Timelineinfo

05/05/2026 Advisory disclosed
05/05/2026 +0 days CVE reserved
05/05/2026 +0 days VulDB entry created
05/06/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-gr92-w2r5-qw5p
Status: Confirmed

CVE: CVE-2026-44029 (🔒)
GCVE (CVE): GCVE-0-2026-44029
GCVE (VulDB): GCVE-100-361088

Entryinfo

Created: 05/05/2026 07:02
Updated: 05/06/2026 07:34
Changes: 05/05/2026 07:02 (63), 05/06/2026 07:34 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

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