RCE in Mettle Sendportal
CVE-2026-10234
A vulnerability was detected in Mettle sendportal up to 3.0.1. This affects an unknown part of the file /webview/ of the component Campaign Handler. The manipulation of the argument content results in cross site scripting. The attack can be launched remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
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: 0.002 (9.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Mettle Sendportal — versions 3.0.0, 3.0.1
Weakness classification (CWE)
References
- vuldb.com/vuln/367513 (technical-description, vdb-entry)
- vuldb.com/vuln/367513/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-10234 (third-party-advisory)
- vuldb.com/submit/822923 (third-party-advisory)
- vuldb.com/submit/825494 (third-party-advisory)
- github.com/mettle/sendportal/issues/338 (issue-tracking, exploit)
- github.com/mettle/sendportal/ (product)
Frequently asked questions
- What is CVE-2026-10234?
- CVE-2026-10234 is a low-severity vulnerability in Mettle Sendportal, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-06-01.
- How severe is CVE-2026-10234?
- Low severity. CVSS v3 base score is 3.5 out of 10.