CVE-2026-28355
Canarytokens help track activity and actions on a network.
Published Feb 27, 2026 · updated Jun 17, 2026
Canarytokens help track activity and actions on a network. Versions prior to have a Self Cross-Site Scripting vulnerability in the "PWA" Canarytoken, whereby the Canarytoken's creator can attack themselves or someone they share the link with. The creator of a PWA Canarytoken can insert Javascript into the title field of their PWA token. When the creator later browses the installation page for their own Canarytoken, the Javascript executes. This is a self-XSS. An attacker could create a Canarytoken with this self-XSS, and send the install link to a victim. When they click on it, the Javascript would execute. However, no sensitive information (ex. session information) will be disclosed to the malicious actor. This issue is now patched on Canarytokens.org. Users of self-hosted Canarytokens installations can update by pulling the latest Docker image, or any Docker image after sha-7ff0e12.
Code
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Timeline
Detection, updates, and resolution for this record.
Feb 27, 2026 · NIST NVD
Detected
Canarytokens help track activity and actions on a network. Versions prior to have a Self Cross-Site Scripting vulnerability in the "PWA" Canarytoken, whereby the Canarytoken's creator can attack themselves or someone they share the link with. The creator of a PWA Canarytoken can insert Javascript into the title field of their PWA token. When the creator later browses the installation page for thei
Jun 17, 2026 · NIST NVD
Updated
Canarytokens help track activity and actions on a network. Versions prior to have a Self Cross-Site Scripting vulnerability in the "PWA" Canarytoken, whereby the Canarytoken's creator can attack themselves or someone they share the link with. The creator of a PWA Canarytoken can insert Javascript into the title field of their PWA token. When the creator later browses the installation page for thei
Sources
- NIST NVDVulnerability recordCVE-2026-28355
Canarytokens help track activity and actions on a network. Versions prior to have a Self Cross-Site Scripting vulnerability in the "PWA" Canarytoken, whereby the Canarytoken's creator can attack themselves or someone they share the link with. The creator of a PWA Ca
nvd.nist.gov