Quick answers
- Is CVE-2026-111385 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-111385 being exploited in the wild.
- How severe is CVE-2026-111385?
- Medium severity, with a CVSS score of 4.8, published 16 October 2026.
- Which products and versions are affected?
- Nezha 2.1.0 through 2.3.14.
- Is there a fix for CVE-2026-111385?
- Yes: fixed in 2.3.15. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-111385 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-111385?
- Check whether you run Nezha 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.
How to fix
- Fixed in: 2.3.15
Technical details
The mintTransferTool component in Nezha builds file download and upload URLs (fs.download_url and fs.upload_url) using an unvalidated Host header from HTTP requests. An attacker who can control the Host header on a victim's request can redirect file uploads to attacker-controlled servers or capture one-time download tokens for replay attacks to exfiltrate files.
Affected products
- Nezha Nezha 2.1.0 through 2.3.14
Timeline
- 2026-10-16: disclosed
- 2026-10-01: patched