Varnish/Nginx Proxy Caching: A security weakness
Varnish/Nginx Proxy Caching is affected by a security weakness. Exposure depends on how the affected operation is made reachable by the site. The resulting impact depends on how the affected component exposes the vulnerable operation.
- Component
- Varnish/Nginx Proxy Caching
- Plugin slug
vcaching- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Dec 31, 2025
This CVE was published Dec 31, 2025 and is one of 2 known issues for this plugin.
Update, patch or deactivate.
Update Varnish/Nginx Proxy Caching to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
Insertion of Sensitive Information Into Sent Data vulnerability in Razvan Stanga Varnish/Nginx Proxy Caching vcaching allows Retrieve Embedded Sensitive Data.This issue affects Varnish/Nginx Proxy Caching: from n/a through <= 1.8.3.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N