HashBrown CMS - OS Command Injection in Media Upload Thumbnail Generation
Priority MEDIUM 44CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the media upload thumbnail generation routine. Media.generateThumbnail in src/Server/Entity/Resource/Media.js builds a temporary file path as 'thumbnail' + Path.extname(filename) and passes it, unescaped, into a shell command executed via AppService.exec ('convert ' + tempFile + ...).
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01868 79th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 |
|---|---|---|---|---|---|
| HashBrownCMS | hashbrown-cms | up to 1.4.6 | — | No fix listed | CNA |
- hashbrown-cms VendorHashBrownCMS Affected up to 1.4.6 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-70374
- 2026-10-03 Alias added: GHSA-f8rj-8x92-pfp5
References
More HashBrownCMS vulnerabilities
- TI-2020-05600 A remote code execution issue was discovered in HashBrown CMS through 1.3.3. CVSS 3.1CRITICAL 9.8
- TI-2026-49178 HashBrown CMS - OS Command Injection via Git Deployer Branch Field CVSS 3.1HIGH 8.8
- TI-2020-05601 A privilege escalation issue was discovered in the postUser function in HashBrown CMS… CVSS 3.1HIGH 8.8
- TI-2020-04761 An issue was discovered in HashBrown CMS before 1.3.2. CVSS 3.1HIGH 7.5
Sources
- CVE-2026-70374 · CVE Program
- CVE-2026-70374 · NVD
- FIRST EPSS
- GHSA-f8rj-8x92-pfp5 · 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