ProFTPD before 1.3.9e and 1.3.10rc5 mod_sftp Copy-File Authorization Bypass
Summary
| CVE | CVE-2026-119147 |
|---|---|
| State | PUBLISHED |
| Assigner | VulnCheck |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-30 12:16:35 UTC |
| Updated | 2026-11-05 21:18:40 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v4.0 5.3 MEDIUM from [email protected]
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.002890000 probability, percentile 0.215460000 (date 2026-11-05)
Problem Types: CWE-863 | CWE-863 Incorrect Authorization
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 5.3 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 5.3 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N |
| 3.1 | [email protected] | Secondary | 4.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| 3.1 | CNA | CVSS | 4.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
NonePrivileges Required
LowUser Interaction
NoneConfidentiality
NoneIntegrity
LowAvailability
NoneSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | ProFTPD Project | ProFTPD | affected 1.3.9e custom | Not specified |
| CNA | ProFTPD Project | ProFTPD | affected 1.3.10rc1 1.3.10rc5 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/proftpd/proftpd | [email protected] | github.com | |
| github.com/proftpd/proftpd/releases/tag/v1.3.10rc5 | [email protected] | github.com | |
| github.com/proftpd/proftpd/releases/tag/v1.3.9e | [email protected] | github.com | |
| github.com/proftpd/proftpd/commit/b7d3de4565ae448a510feecd17b41923e44bfe16 | [email protected] | github.com | |
| abraxaslabs.tech/research/proftpd-sftp-copy-file-write | [email protected] | abraxaslabs.tech | |
| www.vulncheck.com/advisories/proftpd-before-1.3-9e-and-1.3-10rc5-mod-sftp-copy-... | [email protected] | www.vulncheck.com | |
| github.com/proftpd/proftpd/blob/v1.3.9d/contrib/mod_sftp/fxp.c | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Abraxas Labs (en)
CNA: MiniMax Security (en)
CNA: TJ Saunders (en)
There are currently no legacy QID mappings associated with this CVE.