How severe is CVE-2026-13140?

CVE-2026-13140 has a CVSS 4.0 base score of 1.1, rated low severity.

Is CVE-2026-13140 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-13140?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-13140 have an EU (EUVD) identifier?

Yes. CVE-2026-13140 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38736.

When was CVE-2026-13140 published?

CVE-2026-13140 was published on 2026-06-24 and last updated on 2026-06-25.

CVE-2026-13140

CVE-2026-13140 is a low-severity vulnerability with a CVSS 4.0 base score of 1.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Low (CVSS 4.0 base score 1.1)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38736
Weakness: CWE-79
Published: 2026-06-24
Last modified: 2026-06-25

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.

Frequently asked questions

What is CVE-2026-13140?: 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.
How severe is CVE-2026-13140?: CVE-2026-13140 has a CVSS 4.0 base score of 1.1, rated low severity.
Is CVE-2026-13140 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-13140?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-13140 have an EU (EUVD) identifier?: Yes. CVE-2026-13140 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38736.
When was CVE-2026-13140 published?: CVE-2026-13140 was published on 2026-06-24 and last updated on 2026-06-25.

References

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

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