CVE-2025-70129
PluXml Captcha Bypass Vulnerability
Description
If the anti spam-captcha functionality in PluXml versions 5.8.22 and earlier is enabled, a captcha challenge is generated with a format that can be automatically recognized for articles, such that an automated script is able to solve this anti-spam mechanism trivially and publish spam comments. The details of captcha challenge are exposed within document body of articles with comments & anti spam-captcha functionalities enabled, including "capcha-letter", "capcha-word" and "capcha-token" which can be used to construct a valid post request to publish a comment. As such, attackers can flood articles with automated spam comments, especially if there are no other web defenses available.
INFO
Published Date :
March 10, 2026, 8:16 p.m.
Last Modified :
April 7, 2026, 1:21 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Upgrade PluXml to a version later than 5.8.22.
- Disable the anti-spam captcha if upgrading is not possible.
- Implement stronger anti-spam measures.
- Monitor for spam comments.
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-2025-70129.
| URL | Resource |
|---|---|
| https://github.com/forest4x/vuln-research-public/blob/main/CVE-2025-70129.pdf | Exploit Third Party Advisory |
| https://youtu.be/dD2olE4yMqY | Exploit |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-70129 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-2025-70129
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-2025-70129 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-70129 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]
Apr. 07, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:pluxml:pluxml:*:*:*:*:*:*:*:* versions up to (including) 5.8.22 Added Reference Type MITRE: https://github.com/forest4x/vuln-research-public/blob/main/CVE-2025-70129.pdf Types: Exploit, Third Party Advisory Added Reference Type MITRE: https://youtu.be/dD2olE4yMqY Types: Exploit -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 11, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-804 -
New CVE Received by [email protected]
Mar. 10, 2026
Action Type Old Value New Value Added Description If the anti spam-captcha functionality in PluXml versions 5.8.22 and earlier is enabled, a captcha challenge is generated with a format that can be automatically recognized for articles, such that an automated script is able to solve this anti-spam mechanism trivially and publish spam comments. The details of captcha challenge are exposed within document body of articles with comments & anti spam-captcha functionalities enabled, including "capcha-letter", "capcha-word" and "capcha-token" which can be used to construct a valid post request to publish a comment. As such, attackers can flood articles with automated spam comments, especially if there are no other web defenses available. Added Reference https://github.com/forest4x/vuln-research-public/blob/main/CVE-2025-70129.pdf Added Reference https://youtu.be/dD2olE4yMqY