CVE-2025-70129
Captcha Bypass in PluXml 5.8.22 Enables Automated Spam Comments
Publication date: 2026-03-10
Last updated on: 2026-04-07
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| pluxml | pluxml | to 5.8.22 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-804 | The product uses a CAPTCHA challenge, but the challenge can be guessed or automatically recognized by a non-human actor. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in PluXml versions 5.8.22 and earlier when the anti spam-captcha functionality is enabled. The captcha challenge generated for articles can be automatically recognized and solved by automated scripts because the captcha details such as "capcha-letter", "capcha-word", and "capcha-token" are exposed within the document body of articles that have comments and anti spam-captcha enabled.
As a result, attackers can easily bypass the anti-spam mechanism and publish spam comments automatically.
How can this vulnerability impact me? :
This vulnerability allows attackers to flood articles with automated spam comments by trivially solving the captcha challenge.
If there are no other web defenses in place, this can lead to a significant increase in spam content on your website, which may degrade user experience, harm your site's reputation, and potentially affect site performance.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know