How severe is CVE-2026-28792?

CVE-2026-28792 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-28792 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28792?

CVE-2026-28792 affects Ssw Tinacms/cli. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28792?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-28792 have an EU (EUVD) identifier?

Yes. CVE-2026-28792 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11611.

When was CVE-2026-28792 published?

CVE-2026-28792 was published on 2026-03-12 and last updated on 2026-06-17.

CVE-2026-28792

CVE-2026-28792 is a critical-severity vulnerability in Ssw Tinacms/cli with a CVSS 3.x base score of 9.6. 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11611
Weakness: CWE-22
Affected product: Ssw Tinacms/cli
Published: 2026-03-12
Last modified: 2026-06-17

Description

Tina is a headless content management system. Prior to 2.1.8 , the TinaCMS CLI dev server combines a permissive CORS configuration (Access-Control-Allow-Origin: *) with the path traversal vulnerability (previously reported) to enable a browser-based drive-by attack. A remote attacker can enumerate the filesystem, write arbitrary files, and delete arbitrary files on developer's machines by simply tricking them into visiting a malicious website while tinacms dev is running. This vulnerability is fixed in 2.1.8.

Frequently asked questions

What is CVE-2026-28792?: Tina is a headless content management system. Prior to 2.1.8 , the TinaCMS CLI dev server combines a permissive CORS configuration (Access-Control-Allow-Origin: *) with the path traversal vulnerability (previously reported) to enable a browser-based drive-by attack. A remote attacker can enumerate the filesystem, write arbitrary files, and delete arbitrary files on developer's machines by simply tricking them into visiting a malicious website while tinacms dev is running. This vulnerability is fixed in 2.1.8.
How severe is CVE-2026-28792?: CVE-2026-28792 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-28792 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28792?: CVE-2026-28792 affects Ssw Tinacms/cli. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28792?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-28792 have an EU (EUVD) identifier?: Yes. CVE-2026-28792 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11611.
When was CVE-2026-28792 published?: CVE-2026-28792 was published on 2026-03-12 and last updated on 2026-06-17.

References

https://github.com/tinacms/tinacms/security/advisories/GHSA-8pw3-9m7f-q734

Affected products (1)

cpe:2.3:a:ssw:tinacms\/cli:*:*:*:*:*:node.js:*:*

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