CVE-2026-82811 Toggl OÜ Toggl Track Extension postMessage origin validation
Attackers can bypass origin validation in the Toggl Track browser extension's postMessage handler, potentially enabling unauthorized interactions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-82811?
CVE-2026-82811 is a medium-severity vulnerability in Toggl Track Extension, published on 31 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A security vulnerability has been detected in Toggl OÜ Toggl Track Extension 4.11.16. This affects an unknown function of the component postMessage Handler. The manipulation leads to origin validation error. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-82811?
How do I fix CVE-2026-82811?
No fix has been published for CVE-2026-82811 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82811 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82811 exists.
Sources
Also known as GHSA-xp3v-wvpf-cjp5.