CVE-2025-22873
Improper access to parent directory of root in os
Description
It was possible to improperly access the parent directory of an os.Root by opening a filename ending in "../". For example, Root.Open("../") would open the parent directory of the Root. This escape only permits opening the parent directory itself, not ancestors of the parent or files contained within the parent.
INFO
Published Date :
Feb. 4, 2026, 11:15 p.m.
Last Modified :
Feb. 10, 2026, 3:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Sanitize input filenames to remove traversal sequences.
- Validate that opened files are within the expected directory.
- Disallow opening parent directories using special characters.
- Implement strict access controls for file operations.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-22873.
| URL | Resource |
|---|---|
| https://go.dev/cl/670036 | Patch Product |
| https://go.dev/issue/73555 | Issue Tracking Vendor Advisory |
| https://groups.google.com/g/golang-announce/c/UZoIkUT367A/m/5WDxKizJAQAJ | Mailing List Release Notes |
| https://pkg.go.dev/vuln/GO-2026-4403 | Vendor Advisory Issue Tracking |
| http://www.openwall.com/lists/oss-security/2025/05/06/2 | Mailing List Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-22873 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-22873
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-22873 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-22873 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 10, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions up to (excluding) 1.23.9 *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions from (including) 1.24.0 up to (excluding) 1.24.3 Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2025/05/06/2 Types: Mailing List, Third Party Advisory Added Reference Type Go Project: https://go.dev/cl/670036 Types: Patch, Product Added Reference Type Go Project: https://go.dev/issue/73555 Types: Issue Tracking, Vendor Advisory Added Reference Type Go Project: https://groups.google.com/g/golang-announce/c/UZoIkUT367A/m/5WDxKizJAQAJ Types: Mailing List, Release Notes Added Reference Type Go Project: https://pkg.go.dev/vuln/GO-2026-4403 Types: Issue Tracking, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 05, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N Added CWE CWE-23 -
New CVE Received by [email protected]
Feb. 04, 2026
Action Type Old Value New Value Added Description It was possible to improperly access the parent directory of an os.Root by opening a filename ending in "../". For example, Root.Open("../") would open the parent directory of the Root. This escape only permits opening the parent directory itself, not ancestors of the parent or files contained within the parent. Added Reference https://go.dev/cl/670036 Added Reference https://go.dev/issue/73555 Added Reference https://groups.google.com/g/golang-announce/c/UZoIkUT367A/m/5WDxKizJAQAJ Added Reference https://pkg.go.dev/vuln/GO-2026-4403 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Feb. 04, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2025/05/06/2