Authorization bypass in ProFTPD mod_sftp copy-file handling
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
ProFTPD before 1.3.9e and from 1.3.10rc1 before 1.3.10rc5 is affected. The mod_sftp copy-file handler skips Limit WRITE checks for new destination files (CWE-863). An authenticated SFTP user can copy any readable file to a new path in directories where uploads are forbidden.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
Description from the CNA
ProFTPD before 1.3.9e and 1.3.10rc5 contains an authorization bypass in the mod_sftp copy-file extension handler that skips Limit WRITE checks for new destination files. Authenticated SFTP users can copy any readable file to a new path in write-denied directories, creating files where uploads are forbidden.
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 |
|---|---|---|---|---|---|
| ProFTPD Project | ProFTPD | before 1.3.9e; 1.3.10rc1 to before 1.3.10rc5 | 1.3.9e, 1.3.10rc5 | Patch available | CNA |
- ProFTPD VendorProFTPD Project Affected before 1.3.9e; 1.3.10rc1 to before 1.3.10rc5 Fixed in 1.3.9e, 1.3.10rc5 Patch available CNA
Remediation
Upgrade ProFTPD to 1.3.9e or 1.3.10rc5, which fix the flaw in the affected release lines.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
- Fix · CNA ProFTPD (ProFTPD Project) Fixed in 1.3.9e, 1.3.10rc5
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
ProFTPD 1.3.10rc5, 1.3.9e
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-82978 Buffer overflow in ProFTPD mod_rewrite utf8trans RewriteMapPriority LOW 28
Vendor assessments
Timeline
- 2026-10-30 Threatist record created from CVE-2026-119147
- 2026-10-30 Alias added: GHSA-24hg-mwfp-6pwj
- 2026-10-30 Affected versions changed · Red Hat
- 2026-10-30 CVSS score added · Red Hat
- 2026-11-05 CISA SSVC decision points changed
References
More ProFTPD Project vulnerabilities
- TI-2006-05599 Stack-based buffer overflow in the sreplace function in ProFTPD 1.3.0 and earlier allows… CVSS 2.0HIGH 10.0
- TI-2010-05061 ProFTPD 1.3.3c Backdoor Command Execution CVSS 4.0CRITICAL 9.3
- TI-2003-00766 ProFTPD 1.2.7 through 1.2.9rc2 does not properly translate newline characters when… CVSS 2.0HIGH 9.0
- TI-2009-00521 SQL injection vulnerability in ProFTPD Server 1.3.1 through 1.3.2rc2 allows remote… CVSS 2.0HIGH 7.5
- TI-1999-00861 Buffer overflow in ProFTPD, wu-ftpd, and beroftpd allows remote attackers to gain root… CVSS 2.0HIGH 10.0
- TI-1999-00363 Buffer overflows in wuarchive ftpd (wu-ftpd) and ProFTPD lead to remote root access… CVSS 2.0HIGH 10.0
Sources
- CVE-2026-119147 · CVE Program
- CVE-2026-119147 · NVD
- FIRST EPSS
- GHSA-24hg-mwfp-6pwj · GitHub Advisory Database · CC BY 4.0
- CVE-2026-119147 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences