GutenKit < 2.5.1 - Contributor+ Stored CSS Injection
Priority LOW 17CWE-74Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
The GutenKit WordPress plugin before 2.5.1 does not validate or escape style settings saved against a post before using them to build the CSS it outputs on the front end, allowing users with the Contributor role and above to inject arbitrary CSS into pages served to other users and to anonymous visitors. JavaScript execution is not possible at that role, so the impact is limited to defacement, interface redressing and forcing external resources to load.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0029 21st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed GutenKit (Unknown): 2.5.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | GutenKit | before 2.5.1 | 2.5.1 | Patch available | CNA |
- GutenKit VendorUnknown Affected before 2.5.1 Fixed in 2.5.1 Patch available CNA
Remediation
- Fix · CNA GutenKit (Unknown) Fixed in 2.5.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-19698
- 2026-10-03 Alias added: GHSA-q4xj-fj7m-v23h
References
Sources
- CVE-2026-19698 · CVE Program
- CVE-2026-19698 · NVD
- FIRST EPSS
- GHSA-q4xj-fj7m-v23h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences