RCE in Mtons Mblog

CVE-2025-9429

A security vulnerability has been detected in mtons mblog up to 3.5.0. This vulnerability affects unknown code of the file /post/submit of the component Post Handler. The manipulation of the argument content/title/ leads to cross site scripting. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (16.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-9429: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-9429?
CVE-2025-9429 is a low-severity vulnerability in Mtons Mblog, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2025-08-26.
How severe is CVE-2025-9429?
Low severity. CVSS v3 base score is 3.5 out of 10.
Is CVE-2025-9429 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.