CVE-2026-119146
ProFTPD before 1.3.9e and 1.3.10rc5 Buffer Overflow via mod_rewrite utf8trans RewriteMap
ProFTPD before 1.3.9e and 1.3.10rc5 contains a buffer overflow vulnerability in the mod_rewrite int:utf8trans RewriteMap that allows remote attackers to overwrite static buffers. Attackers can send FTP command arguments longer than 1024 bytes, without authentication if pre-login commands are rewritten, to corrupt session memory and crash the session.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| ProFTPD ProFTPD Project proftpd/proftpd
github |
≥ 0; < 1.3.9e (affected, custom) ≥ 1.3.10rc1; < 1.3.10rc5 (affected, custom) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.3 medium |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 5.6 medium |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L | CNA: VulnCheck |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/proftpd/proftpd/commit/502d280b8d0ef72e44c6dd0a35a9405af0a1e301CNA: VulnCheck · patch
- https://github.com/proftpd/proftpd/blob/v1.3.9d/contrib/mod_rewrite.c#L2052CNA: VulnCheck · technical-description
- https://github.com/proftpd/proftpd/releases/tag/v1.3.9eCNA: VulnCheck · release-notes
- https://github.com/proftpd/proftpd/releases/tag/v1.3.10rc5CNA: VulnCheck · release-notes
- https://abraxaslabs.tech/research/proftpd-rewrite-utf8transCNA: VulnCheck · third-party-advisory
- https://github.com/proftpd/proftpdCNA: VulnCheck · product
- https://www.vulncheck.com/advisories/proftpd-before-1.3-9e-and-1.3-10rc5-buffer-overflow-via-mod-rewrite-utf8trans-rewritemapCNA: VulnCheck · third-party-advisory
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