Unrestricted XML Files Leads to Stored XSS in microweber/microweber

published 2022-03-15 4 y ago modified 2026-06-17 4 mo ago also GHSA-q3x2-jvp3-wj78 , EUVD-2022-1508

cvss: 5.7; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.9%; EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits: 0; none known, plus a Nuclei check

Unrestricted XML Files Leads to Stored XSS in GitHub repository microweber/microweber prior to 1.2.12.

Patch / fix

fixed in 2 links 2

packagist microweber/microweber 1.2.12
microweber microweber/microweber 1.2.12

github.com/microweber/microweber@975fc1d commit
huntr.dev/bounties/a89a4198-0880-4aa2-8439-a463f39f244c advisory

Exploit prediction

1.88% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Nuclei template Microweber <1.2.12 - Stored Cross-Site Scripting nuclei detection template
huntr.dev https://huntr.dev/bounties/a89a4198-0880-4aa2-8439-a463f39f244c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.7	CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
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	<1.2.12	1.2.12

Affected products

microweber microweber/microweber

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /microweber/microweber/commit/975fc1d6d3fba598ee550849ceb81af23ce72e08
web, patch, third-party-advisory
huntr.dev /bounties/a89a4198-0880-4aa2-8439-a463f39f244c
web, exploit, patch, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2022-0963
advisory
github.com /microweber/microweber
package

Sources

CVE List CVE-2022-0963
GitHub Advisory GHSA-q3x2-jvp3-wj78
NVD CVE-2022-0963

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