Custom Base Terms < 1.0.3 - Admin+ Stored XSS
Priority MEDIUM 55Published · 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 · CISA ADP. Fix status from CNA.
Summary
The Custom Base Terms WordPress plugin before 1.0.3 does not sanitize and escape some of its settings, which could allow high-privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0047 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed Custom Base Terms (Unknown): 1.0.3
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 | Custom Base Terms | before 1.0.3 | 1.0.3 | Patch available | CNA |
- Custom Base Terms VendorUnknown Affected before 1.0.3 Fixed in 1.0.3 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:artprojectgroup:custom_base_terms:*:*:*:*:*:wordpress:*:* | before 1.0.3 | Vulnerable | Artprojectgroup |
- cpe:2.3:a:artprojectgroup:custom_base_terms:*:*:*:*:*:wordpress:*:* Versions before 1.0.3 Vulnerable ·Artprojectgroup
Remediation
- Fix · CNA Custom Base Terms (Unknown) Fixed in 1.0.3
Timeline
- 2026-10-02 Threatist record created from CVE-2023-2600
- 2026-10-03 Alias added: GHSA-39h5-qh47-7qp5
References
Sources
- CVE-2023-2600 · CVE Program
- CVE-2023-2600 · NVD
- FIRST EPSS
- GHSA-39h5-qh47-7qp5 · 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