GS Books Showcase < 1.3.1 - Contributor+ Stored XSS
Priority HIGH 65Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
The GS Books Showcase WordPress plugin before 1.3.1 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00608 49th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed GS Books Showcase (Unknown): 1.3.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
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 | GS Books Showcase | before 1.3.1 | 1.3.1 | Patch available | CNA |
- GS Books Showcase VendorUnknown Affected before 1.3.1 Fixed in 1.3.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gsplugins:gs_books_showcase:*:*:*:*:*:wordpress:*:* | before 1.3.1 | Vulnerable | GS Plugins |
- cpe:2.3:a:gsplugins:gs_books_showcase:*:*:*:*:*:wordpress:*:* Versions before 1.3.1 Vulnerable ·GS Plugins
Remediation
- Fix · CNA GS Books Showcase (Unknown) Fixed in 1.3.1
Timeline
- 2026-10-02 Threatist record created from CVE-2023-0541
- 2026-10-03 Alias added: GHSA-q9wm-mphh-pw22
References
Sources
- CVE-2023-0541 · CVE Program
- CVE-2023-0541 · NVD
- FIRST EPSS
- GHSA-q9wm-mphh-pw22 · 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