CVE-2020-37038 Code Blocks 20.03 - Denial Of Service
Attackers can crash the Code::Blocks IDE by pasting a large payload into the FSymbols search field, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-37038?
CVE-2020-37038 is a medium-severity denial of service vulnerability in Code::Blocks, published on 30 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Code Blocks 20.03 contains a denial of service vulnerability that allows attackers to crash the application by manipulating input in the FSymbols search field. Attackers can paste a large payload of 5000 repeated characters into the search field to trigger an application crash.
Weakness: CWE-770
Which versions are affected by CVE-2020-37038?
How do I fix CVE-2020-37038?
No fix has been published for CVE-2020-37038 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-37038 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37038 exists.
Sources
Also known as GHSA-jgmq-7wwp-jmfp, UBUNTU-CVE-2020-37038.