What is CVE-2022-0378?

CVE-2022-0378 is a medium-severity vulnerability in Microweber, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-01-26.

How severe is CVE-2022-0378?

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

Is CVE-2022-0378 known to be exploited?

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

XSS in Microweber

CVE-2022-0378

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

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-01-26 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.039 (89.9th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · 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/529b65c0-5be7-49d4-9419-f905b8153d31 (Exploit, Third Party Advisory)
github.com/microweber/microweber/commit/fc7e1a026735b93f0e0047700d08c44954fce9ce (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0378?: CVE-2022-0378 is a medium-severity vulnerability in Microweber, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-01-26.
How severe is CVE-2022-0378?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2022-0378 known to be exploited?: 42 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.