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Vulnerabilities

Vulnerability · CVE-2026-28355

Canarytokens help track activity and actions on a network.

Published Feb 27, 2026 · catalog updated Jun 17, 2026 · Canarytokens help track activity

Check if you run it

No confirmed exploitation is on record for CVE-2026-28355. EPSS is 0.46%. Act only if a listed version of Canarytokens help track activity is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Canarytokens help track activity).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low1.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.46%
Remediation
Advisory link
Affected products
See sources for product scope

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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-28355

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-28355. EPSS is 0.46%. Act only if a listed version of Canarytokens help track activity is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.46%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. 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

  2. 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

  • CVE.orgVulnerability recordCVE-2026-28355

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-28355

    30-day exploitation probability 0.5%

    first.org
  • 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

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.