Sulu Observable Response Discrepancy on Admin Login
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-204.
Summary
Sulu is an open-source PHP content management system based on the Symfony framework. It allows over the Admin Login form to detect which user (username, email) exists and which one do not exist. Sulu Installation not using the old Symfony 5.4 security System and previous version are not impacted by this Security issue. The vulnerability has been patched in version 2.5.10.
Why it matters now
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 |
|---|---|---|---|---|---|
| sulu | sulu | 2.5.0 to before 2.5.10 | 2.5.10 | Patch available | CNA |
| — | sulu/sulu (Packagist) | 2.5.0 to before 2.5.10 | 2.5.10 | Patch available | GHSA-wmwf-49vv-p3mr |
- sulu Vendorsulu Affected 2.5.0 to before 2.5.10 Fixed in 2.5.10 Patch available CNA
- sulu/sulu (Packagist) Vendor— Affected 2.5.0 to before 2.5.10 Fixed in 2.5.10 Patch available GHSA-wmwf-49vv-p3mr
Remediation
- Fix · CNA sulu (sulu) Fixed in 2.5.10
- Fix · GHSA-wmwf-49vv-p3mr sulu/sulu (Packagist) Fixed in 2.5.10 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-39343
- 2026-10-03 Alias added: GHSA-wmwf-49vv-p3mr
- 2026-11-06 EPSS moved to the 50th–90th percentile
References
Advisory 2
More Sulu vulnerabilities
- TI-2021-19642 PHP file inclusion in the Sulu admin panel CVSS 3.1HIGH 8.8
- TI-2024-18520 Sulu grants access to pages regardless of role permissions CVSS 3.1HIGH 8.1
- TI-2021-12405 XSS Injection in Media Collection Title was possible CVSS 3.1HIGH 8.4
- TI-2021-19641 Privilege escalation in the Sulu Admin panel CVSS 3.1HIGH 7.2
- TI-2021-18008 Improper Neutralization HTML tags in sulu/sulu CVSS 3.1MEDIUM 6.2
- TI-2024-31897 Reflected XSS Vulnerability in Sulu Media Bundle CVSS 3.1MEDIUM 6.1
Sources
- CVE-2023-39343 · CVE Program
- CVE-2023-39343 · NVD
- FIRST EPSS
- GHSA-wmwf-49vv-p3mr · 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