CVE-2021-27890 SQL injection in n/a
Attackers can execute arbitrary SQL commands via theme XML files, potentially reading or modifying database contents.
- 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-2021-27890?
CVE-2021-27890 is a high-severity SQL injection vulnerability in Mybb Mybb, published on 15 Mar 2021. 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
SQL Injection vulnerablity in MyBB before 1.8.26 via theme properties included in theme XML files.
Weakness: CWE-89
Which versions are affected by CVE-2021-27890?
It affects 1 product.
Products include Mybb Mybb.
How do I fix CVE-2021-27890?
No fix has been published for CVE-2021-27890 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2021-27890 being exploited?
There is no known exploitation of CVE-2021-27890 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.