# CVE-2025-13357: Vault Terraform Provider Applied Incorrect Defaults for LDAP Auth Method

> Incorrect default settings in the Vault Terraform Provider could allow authentication bypass if the LDAP server permits anonymous binds.

- **Severity:** High 7.4 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/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:** 21 Nov 2025
- **Updated:** 17 Apr 2026
- **Also known as:** GHSA-gmm6-j2g5-r52m, GO-2025-4152

## What is CVE-2025-13357?

CVE-2025-13357 is a high-severity vulnerability in HashiCorp Tooling, published on 21 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Vault’s Terraform Provider incorrectly set the default deny_null_bind parameter for the LDAP auth method to false by default, potentially resulting in an insecure configuration. If the underlying LDAP server allowed anonymous or unauthenticated binds, this could result in authentication bypass. This vulnerability, CVE-2025-13357, is fixed in Vault Terraform Provider v5.5.0.

Weakness: CWE-1188 (Initialization of a Resource with an Insecure Default)

## Which versions are affected by CVE-2025-13357?

3 open source packages ship an affected version, including github.com/hashicorp/terraform-provider-vault. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/hashicorp/terraform-provider-vault` | Go | All versions | None |
| `github.com/hashicorp/terraform-provider-vault` | Go | All versions | 5.5.0 |
| `github.com/hashicorp/terraform-provider-vault` | Go | All versions | 5.5.0 |

Products: Hashicorp Terraform Provider.

## How do I fix CVE-2025-13357?

Upgrade github.com/hashicorp/terraform-provider-vault to 5.5.0 or later.

## Is CVE-2025-13357 being exploited?

There is no known exploitation of CVE-2025-13357 in the wild and no public exploit code.

## Other vulnerabilities in HashiCorp Tooling

- [CVE-2021-30476](https://insights.sbomify.com/CVE-2021-30476/): Auth bypass in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-13357 and fix it if it is affected.

What it is: CVE-2025-13357 is a high-severity vulnerability in HashiCorp Tooling, published on 21 Nov 2025. 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-2025-13357 in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/hashicorp/terraform-provider-vault (Go): affected all versions; no fix listed
- github.com/hashicorp/terraform-provider-vault (Go): affected all versions; fixed in 5.5.0
- github.com/hashicorp/terraform-provider-vault (Go): affected all versions; fixed in 5.5.0

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-2025-13357/ (Markdown: https://insights.sbomify.com/CVE-2025-13357/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-13357
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-13357
- OSV: https://osv.dev/vulnerability/CVE-2025-13357

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-13357/
Summaries are generated and may contain mistakes; the official description above is the record.