CVE-2023-29456 Inefficient URL schema validation
Attackers can exploit inefficient URL validation to inject malicious scripts, potentially leading to code execution or security bypass in Zabbix.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-29456?
CVE-2023-29456 is a medium-severity cross-site scripting vulnerability in Zabbix, published on 13 Jul 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
URL validation scheme receives input from a user and then parses it to identify its various components. The validation scheme can ensure that all URL components comply with internet standards.
Which versions are affected by CVE-2023-29456?
It affects 1 product.
Products include Zabbix Frontend.
How do I fix CVE-2023-29456?
Apply the vendor's patch.
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-2023-29456 being exploited?
There is no known exploitation of CVE-2023-29456 in the wild and no public exploit code.
Other vulnerabilities in Zabbix
- CVE-2023-32725 Leak of zbx_session cookie when using a scheduled report that includes a dashboard with a URL widget.
- CVE-2025-27232 Frontend arbitrary file read in oauth.authorize action
- CVE-2023-29457 Insufficient validation of Action form input fields
- CVE-2025-49643 Frontend DoS vulnerability due to asymmetric resource consumption
- CVE-2023-29454 Persistent XSS in the user form
Sources
Also known as DEBIAN-CVE-2023-29456, GHSA-q598-p9hw-59vj, UBUNTU-CVE-2023-29456.