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CVE Vulnerability Details :
CVE-2026-28355
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-27 Feb, 2026 | 21:04
Updated At-27 Feb, 2026 | 21:04
Rejected At-
▼CVE Numbering Authority (CNA)
"PWA" Canarytoken Vulnerable to Stored Self Cross-Site Scripting

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.

Affected Products
Vendor
thinkst
Product
canarytokens
Versions
Affected
  • < sha-7ff0e12
Problem Types
TypeCWE IDDescription
CWECWE-79CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Type: CWE
CWE ID: CWE-79
Description: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Metrics
VersionBase scoreBase severityVector
4.01.3LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
Version: 4.0
Base score: 1.3
Base severity: LOW
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

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Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/thinkst/canarytokens/security/advisories/GHSA-6734-fqcj-x5h3
x_refsource_CONFIRM
Hyperlink: https://github.com/thinkst/canarytokens/security/advisories/GHSA-6734-fqcj-x5h3
Resource:
x_refsource_CONFIRM
Details not found