Quick answers
- Is CVE-2023-28148 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2023-28148 being exploited in the wild.
- How severe is CVE-2023-28148?
- High severity, with a CVSS score of 7.2, published 14 September 2026.
- Which products and versions are affected?
- Paessler PRTG Network Monitor before 23.3.86.1520.
- Is there a fix for CVE-2023-28148?
- 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-2023-28148 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2023-28148?
- Check whether you run Paessler PRTG Network Monitor 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 stored XSS vulnerability exists in Paessler PRTG versions before 23.3.86.1520 within the body class attribute. The vulnerability stems from insufficient input validation or output encoding of user-supplied data that is rendered in the HTML body element's class attribute. An attacker can inject arbitrary HTML and JavaScript by crafting a malicious payload; the attack requires prior authentication or access to an input field that populates the body class. Successful exploitation allows the attacker's JavaScript to execute in the context of other users' sessions, enabling session hijacking, credential theft, or modification of monitoring configurations. The vulnerability was patched in version 23.3.86.1520 and later.
Affected products
- Paessler PRTG Network Monitor before 23.3.86.1520
Timeline
- 2023-09-14: disclosed