Blackcat CMS 1.4 Stored Cross-Site Scripting via Page Modification
Priority MEDIUM 56CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Blackcat CMS 1.4 contains a stored cross-site scripting vulnerability that allows authenticated users to inject malicious scripts into page content. Attackers can insert JavaScript payloads in the page modification interface that execute when other users view the compromised page.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00245 15th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| blackcat-cms | Blackcat CMS | 1.4 | — | No fix listed | CNA |
- Blackcat CMS Vendorblackcat-cms Affected 1.4 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:blackcat-cms:blackcat_cms:1.4:*:*:*:*:*:*:* | 1.4 | Vulnerable | blackcat-cms |
- cpe:2.3:a:blackcat-cms:blackcat_cms:1.4:*:*:*:*:*:*:* Versions 1.4 Vulnerable ·blackcat-cms
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-53891
- 2026-10-03 Alias added: GHSA-f5gv-p76p-jp44
References
Exploit 1
Other 1
More blackcat-cms Blackcat Cms vulnerabilities
- TI-2023-30175 Blackcat CMS 1.4 Remote Code Execution via Jquery Plugin Manager CVSS 4.0HIGH 8.6
- TI-2023-23624 A reflected cross-site scripting (XSS) vulnerability in /install/index.php of Black Cat… CVSS 3.1MEDIUM 6.1
- TI-2023-23623 A stored cross-site scripting (XSS) vulnerability in /settings/index.php of Black Cat CMS… CVSS 3.1MEDIUM 5.4
- TI-2015-04260 Directory traversal vulnerability in widgets/logs.php in BlackCat CMS before 1.1.2 allows… CVSS 3.0HIGH 7.5
- TI-2020-15556 An issue was discovered in BlackCat CMS before 1.4. CVSS 3.1HIGH 8.8
- TI-2017-10506 In BlackCat CMS 1.2.2, unrestricted file upload is possible in… CVSS 3.0HIGH 8.8
Sources
- CVE-2023-53891 · CVE Program
- CVE-2023-53891 · NVD
- FIRST EPSS
- GHSA-f5gv-p76p-jp44 · 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