CVE-2021-32856 json
Microweber vulnerable to Cross-site Scripting
published 2023-02-20 3 y ago modified 2026-06-17 4 mo ago also GHSA-mv37-xrmc-hf64 , EUVD-2023-0744
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
Microweber is a drag and drop website builder and content management system. Versions 1.2.12 and prior are vulnerable to copy-paste cross-site scripting (XSS). For this particular type of XSS, the victim needs to be fooled into copying a malicious payload into the text editor. A fix was attempted in versions 1.2.9 and 1.2.12, but it is incomplete.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 20 mo ago
Exploit prediction
0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- securitylab.github.com https://securitylab.github.com/advisories/GHSL-2021-1005-Microweber/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | microweber/microweber | <=1.2.12 |
no fix listed |
Affected products
- microweber microweber
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/microweber/microweber/commit/f3b86d59ab674dbf514f9f9948ddfa091739ab75
web, patch, third-party-advisory
-
securitylab.github.com
/advisories/GHSL-2021-1005-Microweber/
exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-32856
advisory
-
github.com
/microweber/microweber
package
-
securitylab.github.com
/advisories/GHSL-2021-1005-Microweber
advisory
Sources
- CVE List CVE-2021-32856
- GitHub Advisory GHSA-mv37-xrmc-hf64
- NVD CVE-2021-32856
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