Vulnerability in Pluxml
CVE-2025-70129
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
Weakness classification (CWE)
References
- youtu.be/dD2olE4yMqY (Exploit)
- github.com/forest4x/vuln-research-public/blob/main/CVE-2025-70129.pdf (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-70129?
- CVE-2025-70129 is a medium-severity vulnerability in Pluxml, classified under CWE-804. CVSS score: 5.3/10. Published 2026-03-10.
- How severe is CVE-2025-70129?
- Medium severity. CVSS v3 base score is 5.3 out of 10.