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CVE

CVE-2026-26980

Ghost has a SQL injection in Content API
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CVE

CVE-2026-26980

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.

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.4
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
C
H
U
9.4
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Related Resources

No items found.

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://github.com/TryGhost/Ghost, https://github.com/TryGhost/Ghost/releases/tag/v6.19.1

Severity

9.4

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
9.4
EPSS Probability
0.00079%
EPSS Percentile
0.23288%
Introduced Version
3.24.0,5.3.0
Fix Available
6.19.1

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