CVE-2021-31548 Security feature bypass in n/a
Attackers can bypass AbuseFilter restrictions to complete edits despite being partially or unsuccessfully blocked.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-31548?
CVE-2021-31548 is a medium-severity vulnerability in Mediawiki Mediawiki, published on 22 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. A MediaWiki user who is partially blocked or was unsuccessfully blocked could bypass AbuseFilter and have their edits completed.
Weakness: CWE-863
Which versions are affected by CVE-2021-31548?
1 open source package ship an affected version, including mediawiki. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mediawiki Bitnami | All versions | 1.35.3 |
Products include Mediawiki Mediawiki.
How do I fix CVE-2021-31548?
Upgrade mediawiki to 1.35.3 or later.
Is CVE-2021-31548 being exploited?
There is no known exploitation of CVE-2021-31548 in the wild and no public exploit code.
Other vulnerabilities in Mediawiki Mediawiki
Sources
Also known as BIT-mediawiki-2021-31548, GHSA-773v-8w82-h42v.