What is CVE-2022-2300?

CVE-2022-2300 is a medium-severity vulnerability in Microweber, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-07-04.

How severe is CVE-2022-2300?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2022-2300 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Microweber

CVE-2022-2300

Cross-site Scripting (XSS) - Stored in GitHub repository microweber/microweber prior to 1.2.19.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-07-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Microweber
Microweber Microweber/microweber — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

huntr.dev/bounties/882d6cf9-64f5-4614-a873-a3030473c817 (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/microweber/microweber/commit/70b46e231e7b2c113666745a0ab6de9a8b7ef08e (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-2300?: CVE-2022-2300 is a medium-severity vulnerability in Microweber, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-07-04.
How severe is CVE-2022-2300?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2022-2300 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.