# CVE-2026-76560: 389-ds-base: 389-ds: anonymous ldap client can defeat selfdn aci bind-rule checks via empty bind dn

> An anonymous LDAP client can bypass SELFDN access controls to modify directory entries, requiring a patch for Red Hat Directory Server.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 7 Sep 2026
- **Updated:** 8 Oct 2026
- **Also known as:** AZL-99977, DEBIAN-CVE-2026-76560, GHSA-g4xg-g9jg-549h, UBUNTU-CVE-2026-76560

## What is CVE-2026-76560?

CVE-2026-76560 is a high-severity authentication bypass vulnerability in Red Hat Directory Server 11, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A flaw was found in 389 Directory Server. The SELFDN ACI bind-rule evaluator incorrectly matches an anonymous LDAP client's empty bind DN against an empty stored attribute value, allowing an unauthenticated client to satisfy access control checks intended to require a matching authenticated identity. This can allow an anonymous LDAP client to perform an operation, such as adding or modifying a directory entry, that a SELFDN-based ACI intended to restrict to a specific authenticated user.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2026-76560?


## How do I fix CVE-2026-76560?

Apply the vendor's patch.

## Is CVE-2026-76560 being exploited?

There is no known exploitation of CVE-2026-76560 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76560 and fix it if it is affected.

What it is: CVE-2026-76560 is a high-severity authentication bypass vulnerability in Red Hat Directory Server 11, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-76560 in the wild and no public exploit code.

Affected product: Red Hat Directory Server 11. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-76560/ (Markdown: https://insights.sbomify.com/CVE-2026-76560/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76560
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76560
- OSV: https://osv.dev/vulnerability/CVE-2026-76560

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-76560/
Summaries are generated and may contain mistakes; the official description above is the record.