BetterDocs < 4.5.5 - Unauthenticated Stored XSS via AI Doc Summarizer Prompt Injection
Priority MEDIUM 60CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
The BetterDocs WordPress plugin before 4.5.5 does not sanitise an AI-generated documentation summary before storing and outputting it, and the feature that generates it is exposed to unauthenticated users, allowing them to store a malicious payload via prompt injection that executes in the browser of any visitor who views the affected page, including administrators.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00275 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed BetterDocs (Unknown): 4.5.5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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 | BetterDocs | 4.0.0 to before 4.5.5 | 4.5.5 | Patch available | CNA |
- BetterDocs VendorUnknown Affected 4.0.0 to before 4.5.5 Fixed in 4.5.5 Patch available CNA
Remediation
- Fix · CNA BetterDocs (Unknown) Fixed in 4.5.5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-11371
- 2026-10-03 Alias added: GHSA-x6ph-p955-jvgx
References
Sources
- CVE-2026-11371 · CVE Program
- CVE-2026-11371 · NVD
- FIRST EPSS
- GHSA-x6ph-p955-jvgx · 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