How severe is CVE-2026-29053?

CVE-2026-29053 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-29053 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-29053?

CVE-2026-29053 affects Ghost. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-29053?

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

Does CVE-2026-29053 have an EU (EUVD) identifier?

Yes. CVE-2026-29053 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9788.

When was CVE-2026-29053 published?

CVE-2026-29053 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-29053

CVE-2026-29053 is a high-severity vulnerability in Ghost with a CVSS 3.x base score of 7.6. 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-74.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9788
Weakness: CWE-74
Affected product: Ghost
Published: 2026-03-05
Last modified: 2026-06-17

Description

Ghost is a Node.js content management system. From version 0.7.2 to 6.19.0, specifically crafted malicious themes can execute arbitrary code on the server running Ghost. This issue has been patched in version 6.19.1.

Frequently asked questions

What is CVE-2026-29053?: Ghost is a Node.js content management system. From version 0.7.2 to 6.19.0, specifically crafted malicious themes can execute arbitrary code on the server running Ghost. This issue has been patched in version 6.19.1.
How severe is CVE-2026-29053?: CVE-2026-29053 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-29053 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-29053?: CVE-2026-29053 affects Ghost. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-29053?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-29053 have an EU (EUVD) identifier?: Yes. CVE-2026-29053 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9788.
When was CVE-2026-29053 published?: CVE-2026-29053 was published on 2026-03-05 and last updated on 2026-06-17.

References

https://github.com/TryGhost/Ghost/security/advisories/GHSA-cgc2-rcrh-qr5x

Affected products (1)

cpe:2.3:a:ghost:ghost:*:*:*:*:*:node.js:*:*

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