Abusing Backup/Restore feature to achieve Remote Code Execution in microweber/microweber

published 2022-03-11 4 y ago modified 2026-06-17 4 mo ago also GHSA-j878-43hm-8gr5 , EUVD-2022-1453

cvss: 7.2; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.2%; EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits: 0; none known

Abusing Backup/Restore feature to achieve Remote Code Execution in GitHub repository microweber/microweber prior to 1.2.12.

Patch / fix

fixed in 2 links 1

packagist microweber/microweber 1.2.12
microweber microweber/microweber 1.2.12

github.com/microweber/microweber@867bdda commit

Exploit prediction

2.21% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

huntr.dev https://huntr.dev/bounties/e368be37-1cb4-4292-8d48-07132725f622 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	7.2	CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
packagist	microweber/microweber	<1.2.12	1.2.12

Affected products

microweber microweber/microweber

Classification

Weakness

CWE-94 Improper Control of Generation of Code
CWE-434 Unrestricted Upload of File with Dangerous Type

References

github.com /microweber/microweber/commit/867bdda1b4660b0795ad7f87ab5abe9e44b2b318
web, patch, third-party-advisory
huntr.dev /bounties/e368be37-1cb4-4292-8d48-07132725f622
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2022-0921
advisory
github.com /microweber/microweber
package

Sources

CVE List CVE-2022-0921
GitHub Advisory GHSA-j878-43hm-8gr5
NVD CVE-2022-0921

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