What is CVE-2022-0278?

CVE-2022-0278 is a medium-severity vulnerability in Microweber, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-01-20.

How severe is CVE-2022-0278?

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

XSS in Microweber

CVE-2022-0278

Cross-site Scripting (XSS) - Stored in Packagist microweber/microweber prior to 1.2.11.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-01-20 · 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: 0.007 (52.5th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Microweber
Microweber Microweber/microweber — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

huntr.dev/bounties/64495d0f-d5ec-4542-9693-32372c18d030 (Exploit, Third Party Advisory)
github.com/microweber/microweber/commit/b64ef574b82dbf89a908e1569d790c7012d1ccd7 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0278?: CVE-2022-0278 is a medium-severity vulnerability in Microweber, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-01-20.
How severe is CVE-2022-0278?: Medium severity. CVSS v3 base score is 5.4 out of 10.