CVE-2026-119755 Tasmota 16.0.0 CSRF via Referer Header Validation Bypass
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-119755?
CVE-2026-119755 is a high-severity vulnerability in arendst Tasmota, published on 9 Nov 2026.
Official description
Tasmota through 16.0.0, fixed in commit 1cb7ebc, contains a cross-site request forgery vulnerability that allows unauthenticated attackers to bypass Referer-based CSRF protection in HttpCheckPriviledgedAccess() by crafting a Referer header where the device hostname or IP appears as a substring immediately after http://.evil.com/. Attackers can lure an administrator on the device's network to a malicious page to issue arbitrary console commands and reconfigure Wi-Fi, MQTT, settings, or firmware on devices lacking a WebPassword.
Weakness: CWE-352
Which versions are affected by CVE-2026-119755?
How do I fix CVE-2026-119755?
No fix has been published for CVE-2026-119755 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-119755 being exploited?
There is no known exploitation of CVE-2026-119755 in the wild and no public exploit code.
Sources
Also known as GHSA-36q7-7q5p-cw6h.