CVE-2021-32856 Microweber vulnerable to Cross-site Scripting
Attackers can execute arbitrary scripts in victim browsers via malicious copy-paste payloads in the Microweber CMS text editor.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-32856?
CVE-2021-32856 is a medium-severity cross-site scripting vulnerability in Microweber Microweber, published on 20 Feb 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2021-32856?
2 open source packages ship an affected version, including microweber/microweber. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
microweber/microweber Packagist | All versions to 1.2.12 | None |
microweber/microweber Packagist | All versions to 1.2.12 | None |
Products include Microweber Microweber.
How do I fix CVE-2021-32856?
No fix has been published for CVE-2021-32856 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-32856 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-32856 exists.
Other vulnerabilities in Microweber Microweber
- CVE-2022-0558 Cross-site Scripting (XSS) - Stored in microweber/microweber
- CVE-2020-23138 File upload in n/a
- CVE-2022-0688 Business Logic Errors in microweber/microweber
- CVE-2022-0660 Generation of Error Message Containing Sensitive Information in microweber/microweber
- CVE-2022-0913 Integer Overflow or Wraparound in microweber/microweber
Sources
Also known as CVE-2021-32861, GHSA-mv37-xrmc-hf64.