CVE-2025-34182 Deciso OPNsense < 25.7.4 /interfaces_ppps_edit.php ptpid Stored XSS
Authenticated attackers can inject malicious scripts via the ptpid parameter in OPNsense, leading to stored XSS and potential session hijacking.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-34182?
CVE-2025-34182 is a medium-severity cross-site scripting vulnerability in Deciso OPNsense, published on 1 Oct 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
In Deciso OPNsense before 25.7.4, when creating an "Interfaces: Devices: Point-to-Point" entry, the value of the parameter ptpid is not sanitized of HTML-related characters/strings. This value is directly displayed when visiting the page/interfaces_assign.php, which can result in stored cross-site scripting. The attacker must be authenticated with at-least "Interfaces: PPPs: Edit" permission. This vulnerability has been addressed by the vendor in the product release notes as "ui: legacy_html_escape_form_data() was not escaping keys only data elements."
Weakness: CWE-79
Which versions are affected by CVE-2025-34182?
How do I fix CVE-2025-34182?
No fix has been published for CVE-2025-34182 yet. Limit exposure of the affected software until one is available.
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-2025-34182 being exploited?
There is no known exploitation of CVE-2025-34182 in the wild and no public exploit code.
Sources
Also known as GHSA-v8ch-859h-ggwh.