Cross-site Scripting (XSS) - Stored in microweber/microweber

published 2022-02-10 4 y ago modified 2026-06-17 4 mo ago also GHSA-wmj9-xh24-j4gx , EUVD-2022-1231

cvss: 9.8; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits: 0; none known

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

Patch / fix

fixed in 2 links 1

packagist microweber/microweber 1.2.11
microweber microweber/microweber 1.2.11

github.com/microweber/microweber@14a1bb9 commit

Exploit prediction

0.90% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

huntr.dev https://huntr.dev/bounties/8fffc95f-14ae-457b-aecc-be4716a8b91c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N
GitHub	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	microweber/microweber	<1.2.11	1.2.11

Affected products

microweber microweber/microweber

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /microweber/microweber/commit/14a1bb971bcb8b5456c2bf0020c3018907a2704d
web, patch, third-party-advisory
huntr.dev /bounties/8fffc95f-14ae-457b-aecc-be4716a8b91c
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2022-0558
advisory
github.com /microweber/microweber
web

Sources

CVE List CVE-2022-0558
GitHub Advisory GHSA-wmj9-xh24-j4gx
NVD CVE-2022-0558

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary