Is CVE-2026-15540 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-15540?

CVE-2026-15540 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-15540

Description

A vulnerability was detected in SourceCodester Online Book Store System 1.0. The affected element is an unknown function of the file /admin/index.php of the component Administrative Interface. Performing a manipulation of the argument page results in improper control of filename for include/require statement in php program. It is possible to initiate the attack remotely. The exploit is now public and may be used.