Quick answers
- Is CVE-2026-78257 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-78257 being exploited in the wild.
- How severe is CVE-2026-78257?
- High severity, with a CVSS score of 8.8, published 27 August 2026.
- Which products and versions are affected?
- MagePeople Booking and Rental Manager <= 2.7.5.
- Is there a fix for CVE-2026-78257?
- A patch was published on 2026-08-25: Version 2.7.6 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-78257 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-78257?
- Check whether you run MagePeople Booking and Rental Manager 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
The vulnerability is a PHP object injection flaw in Booking and Rental Manager versions 2.7.5 and earlier. It allows authenticated users with the Contributor role to inject malicious serialized objects, leading to arbitrary code execution on the server. The attack requires network access and valid WordPress credentials (Contributor privilege or higher). An attacker can instantiate arbitrary PHP classes and trigger dangerous methods, resulting in full remote code execution. The vulnerability was patched in version 2.7.6.
Affected products
- Magepeople Booking and Rental Manager <= 2.7.5
Timeline
- 2026-01-19: disclosed
- 2026-08-25: patched: Version 2.7.6 released
- 2026-08-27: advisory