What is CVE-2023-5861?

CVE-2023-5861 is a medium-severity vulnerability in Microweber, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-10-31.

How severe is CVE-2023-5861?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Microweber

CVE-2023-5861

Cross-site Scripting (XSS) - Stored in GitHub repository microweber/microweber prior to 2.0.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-10-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (35.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Microweber
Microweber Microweber/microweber — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

huntr.com/bounties/7baecef8-6c59-42fc-bced-886c4929e220 (Exploit, Patch, Third Party Advisory)
github.com/microweber/microweber/commit/6ed7ebf1631dd8f0780caa4151a5538f3b227d26 (Patch)

Frequently asked questions

What is CVE-2023-5861?: CVE-2023-5861 is a medium-severity vulnerability in Microweber, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-10-31.
How severe is CVE-2023-5861?: Medium severity. CVSS v3 base score is 4.8 out of 10.