CVE-2025-40908
LibYAML YAML File Modification Vulnerability
Description
YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified
INFO
Published Date :
June 1, 2025, 2:15 p.m.
Last Modified :
July 2, 2025, 3:43 p.m.
Remotely Exploit :
Yes !
Source :
9b29abf9-4ab0-4765-b253-1875cd9b441e
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update the perl-YAML-LibYAML package.
- Consult vendor guidance for specific update instructions.
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-2025-40908.
| URL | Resource |
|---|---|
| https://github.com/ingydotnet/yaml-libyaml-pm/issues/120 | Exploit Issue Tracking |
| https://github.com/ingydotnet/yaml-libyaml-pm/pull/121 | Issue Tracking Patch |
| https://github.com/ingydotnet/yaml-libyaml-pm/pull/122 | Issue Tracking Patch |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-40908 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-2025-40908
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-2025-40908 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-40908 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]
Jul. 02, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:ingydotnet:yaml-libyaml:*:*:*:*:*:perl:*:* versions up to (excluding) 0.903.0 Added Reference Type CPANSec: https://github.com/ingydotnet/yaml-libyaml-pm/issues/120 Types: Exploit, Issue Tracking Added Reference Type CPANSec: https://github.com/ingydotnet/yaml-libyaml-pm/pull/121 Types: Issue Tracking, Patch Added Reference Type CPANSec: https://github.com/ingydotnet/yaml-libyaml-pm/pull/122 Types: Issue Tracking, Patch -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 02, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N -
New CVE Received by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Jun. 01, 2025
Action Type Old Value New Value Added Description YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified Added CWE CWE-552 Added Reference https://github.com/ingydotnet/yaml-libyaml-pm/issues/120 Added Reference https://github.com/ingydotnet/yaml-libyaml-pm/pull/121 Added Reference https://github.com/ingydotnet/yaml-libyaml-pm/pull/122