Quick answers
- Is CVE-2026-5813 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-5813 being exploited in the wild.
- How severe is CVE-2026-5813?
- High severity, with a CVSS score of 7.3, published 8 April 2026.
- Which products and versions are affected?
- Phpgurukul Online Course Registration 3.1.
- Is there a fix for CVE-2026-5813?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-5813 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-5813?
- Check whether you run Phpgurukul Online Course Registration at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A SQL injection vulnerability exists in PHPGurukul Online Course Registration 3.1 within the '/check_availability.php' file. The root cause is the failure to sanitize or validate user-supplied input for the 'cid' parameter before it is used in a database query. An unauthenticated remote attacker can exploit this by sending a specially crafted POST request containing malicious SQL commands. Successful exploitation allows for boolean-based and time-based blind SQL injection, enabling the attacker to extract database contents, modify data, or potentially gain administrative access. A public proof-of-concept (PoC) using sqlmap has been disclosed.
Affected products
- PHPGurukul Online Course Registration 3.1
Timeline
- 2026-03-25: disclosed: Initial disclosure on GitHub by researcher f1rstb100d
- 2026-04-08: advisory: NVD/VulDB advisory published