The cs_seo extension through 9.2.0 for TYPO3 allows XSS.
Priority LOW 28CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
The cs_seo extension through 9.2.0 for TYPO3 allows XSS.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00248 16th percentileScored 2026-11-07
Fix Fixed cs seo extension (TYPO3): 6.8.0, 7.5.0, 8.4.0 +1clickstorm/cs-seo (Packagist): 9.3.0, 8.4.0, 7.5.0 +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 |
|---|---|---|---|---|---|
| TYPO3 | cs seo extension | 6.3.0 to before 6.8.0; 7.0.0 to before 7.5.0; 8.0.0 to before 8.4.0; 9.0.0 to before 9.3.0 | 6.8.0, 7.5.0, 8.4.0, 9.3.0 | Patch available | CNA |
| — | clickstorm/cs-seo (Packagist) | 9.0.0 to before 9.3.0 | 9.3.0 | Patch available | GHSA-6p8w-pc35-mqv8 |
| — | clickstorm/cs-seo (Packagist) | 8.0.0 to before 8.4.0 | 8.4.0 | Patch available | GHSA-6p8w-pc35-mqv8 |
| — | clickstorm/cs-seo (Packagist) | 7.0.0 to before 7.5.0 | 7.5.0 | Patch available | GHSA-6p8w-pc35-mqv8 |
| — | clickstorm/cs-seo (Packagist) | 6.3.0 to before 6.8.0 | 6.8.0 | Patch available | GHSA-6p8w-pc35-mqv8 |
- cs seo extension VendorTYPO3 Affected 6.3.0 to before 6.8.0; 7.0.0 to before 7.5.0; 8.0.0 to before 8.4.0; 9.0.0 to before 9.3.0 Fixed in 6.8.0, 7.5.0, 8.4.0, 9.3.0 Patch available CNA
- clickstorm/cs-seo (Packagist) Vendor— Affected 9.0.0 to before 9.3.0 Fixed in 9.3.0 Patch available GHSA-6p8w-pc35-mqv8
- clickstorm/cs-seo (Packagist) Vendor— Affected 8.0.0 to before 8.4.0 Fixed in 8.4.0 Patch available GHSA-6p8w-pc35-mqv8
- clickstorm/cs-seo (Packagist) Vendor— Affected 7.0.0 to before 7.5.0 Fixed in 7.5.0 Patch available GHSA-6p8w-pc35-mqv8
- clickstorm/cs-seo (Packagist) Vendor— Affected 6.3.0 to before 6.8.0 Fixed in 6.8.0 Patch available GHSA-6p8w-pc35-mqv8
Remediation
- Fix · CNA cs seo extension (TYPO3) Fixed in 6.8.0, 7.5.0, 8.4.0, 9.3.0
- Fix · GHSA-6p8w-pc35-mqv8 clickstorm/cs-seo (Packagist) Fixed in 9.3.0 Advisory →
- Fix · GHSA-6p8w-pc35-mqv8 clickstorm/cs-seo (Packagist) Fixed in 8.4.0 Advisory →
- Fix · GHSA-6p8w-pc35-mqv8 clickstorm/cs-seo (Packagist) Fixed in 7.5.0 Advisory →
- Fix · GHSA-6p8w-pc35-mqv8 clickstorm/cs-seo (Packagist) Fixed in 6.8.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-48203
- 2026-10-03 Alias added: GHSA-6p8w-pc35-mqv8
References
More TYPO3 vulnerabilities
- TI-2023-10314 Persisted Cross-Site Scripting in Frontend Rendering in typo3 CVSS 3.1HIGH 8.8
- TI-2010-03538 The jumpUrl (aka access tracking) implementation in tslib/class.tslib_fe.php in TYPO3… CVSS 2.0HIGH 7.1
- TI-2009-00775 The jumpUrl mechanism in class.tslib_fe.php in TYPO3 3.3.x through 3.8.x, 4.0 before… CVSS 2.0MEDIUM 5.0
- TI-2025-30547 The sr_feuser_register extension through 12.4.8 for TYPO3 allows Remote Code Execution. CVSS 3.1CRITICAL 10.0
- TI-2019-08867 The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before… CVSS 3.1CRITICAL 9.8
- TI-2008-04019 Unspecified vulnerability in the TYPO3 Secure Directory (kw_secdir) extension before… CVSS 2.0HIGH 10.0
Sources
- CVE-2025-48203 · CVE Program
- CVE-2025-48203 · NVD
- FIRST EPSS
- GHSA-6p8w-pc35-mqv8 · GitHub Advisory Database · CC BY 4.0
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