Ghost has a SQL injection in Content API
Impact
A SQL injection vulnerability existed in Ghost's Content API that allowed unauthenticated attackers to read arbitrary data from the database.
Vulnerable Versions
This vulnerability is present in Ghost v3.24.0 to v6.19.0.
Patches
v6.19.1 contains a fix for this issue.
Note: as this vulnerability lets an attacker gain access to a site's API keys, we recommend reviewing staff users and rotating keys. We generally recommend always updating Ghost to its most current version.
Workarounds
There is no application-level workaround. The Content API key is public by design, so restricting key access does not mitigate this vulnerability.
As a temporary mitigation, a reverse proxy or WAF rule can be used to block Content API requests containing slug%3A%5B or slug:[ in the query string filter parameter. Note that this may break legitimate slug filter functionality.
References
We thank Nicholas Carlini using Claude, Anthropic for disclosing this vulnerability responsibly.
For more information
If you have any questions or comments about this advisory, email us at security@ghost.org.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | ghost | >= 3.24.0, < 6.19.1 | 6.19.1 |
References
- https://github.com/TryGhost/Ghost/security/advisories/GHSA-w52v-v783-gw97
- https://nvd.nist.gov/vuln/detail/CVE-2026-26980
- https://github.com/TryGhost/Ghost/commit/30868d632b2252b638bc8a4c8ebf73964592ed91
- https://blog.xlab.qianxin.com/ghost-cms-page-poisoning-cve-2026-26980
- https://github.com/TryGhost/Ghost
- https://github.com/TryGhost/Ghost/releases/tag/v6.19.1
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L- Weakness (CWE)
CWE-89- Platform
- npm
- Package
ghost- Disclosed
- 18.02.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-w52v-v783-gw97 - CC BY 4.0
Vulnerability history: ghost
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 61
- First → latest
- 04.2021 10.2026
- Without a fix
- 3
- Exploited in attacks
- 0
Severity breakdown
- Critical 4
- High 16
- Medium 38
- Low 3
Disclosures per year
- 2021: 5
- 2022: 4
- 2023: 3
- 2024: 3
- 2025: 1
- 2026: 45
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