CVE-2026-28355Disclosure

LOWCVSS 1.3 · LOW

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-02-28: 2Technical Details · 2026-02-28: 202-28
Signal classification1 categories
Disclosure
2100.0%
Referenced assets3 URLs
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-28355 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, wh… https://www.cve.org/CVERecord?id=CVE-2026-28355

    Post summary

    The post announces CVE‑2026‑28355, detailing a Self XSS flaw in Canarytokens’ PWA before a specific commit, but provides no PoC, exploit, or patch information.

    00000126
    56.6K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-28355 Self Cross-Site Scripting in Canarytokens PWA Canarytoken Before ... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-28355 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1

    Post summary

    The tweet announces CVE‑2026‑28355, a self‑Cross‑Site Scripting flaw in Canarytokens PWA, linking to a vulnerability page but providing no PoC, exploit code, or patch details.

    0000057
    4.0K followersView on X

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