Docker
CVE-2026-28355
Lifecycle Timeline
2DescriptionCVE.org
Canarytokens help track activity and actions on a network. Versions prior to sha-7ff0e12 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.
AnalysisAI
Canarytokens help track activity and actions on a network. Versions prior to sha-7ff0e12 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.
Technical ContextAI
Classified as CWE-79 (Cross-site Scripting (XSS)). Canarytokens help track activity and actions on a network. Versions prior to sha-7ff0e12 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 crea
Affected ProductsAI
Canarytokens help track activity and actions on a network
RemediationAI
Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers.
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
Leaving vuln.today