# CVE-2023-32694: Non-constant time HMAC comparison in Adyen plugin in Saleor

> Attackers can exploit timing side-channels in HMAC validation to forge payment events, requiring the Adyen plugin to be enabled.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 May 2023
- **Updated:** 16 Jan 2025
- **Also known as:** GHSA-3rqj-9v87-2x3f

## What is CVE-2023-32694?

CVE-2023-32694 is a medium-severity vulnerability in saleor, published on 25 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Saleor Core is a composable, headless commerce API. Saleor's `validate_hmac_signature` function is vulnerable to timing attacks. Malicious users could abuse this vulnerability on Saleor deployments having the Adyen plugin enabled in order to determine the secret key and forge fake events, this could affect the database integrity such as marking an order as paid when it is not. This issue has been patched in versions 3.7.68, 3.8.40, 3.9.49, 3.10.36, 3.11.35, 3.12.25, and 3.13.16.

Weakness: CWE-208 (Observable Timing Discrepancy), CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2023-32694?

It affects 1 product.


Products: Saleor Saleor.

## How do I fix CVE-2023-32694?

No fix has been published for CVE-2023-32694 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-32694 being exploited?

There is no known exploitation of CVE-2023-32694 in the wild and no public exploit code.

## Other vulnerabilities in saleor

- [CVE-2026-24136](https://insights.sbomify.com/CVE-2026-24136/): Saleor has an Insecure Direct Object Reference (IDOR) in GraphQL API (high 8.7)
- [CVE-2026-23499](https://insights.sbomify.com/CVE-2026-23499/): Saleor vulnerable to stored XSS via Unrestricted File Upload (high 8.5)
- [CVE-2026-33756](https://insights.sbomify.com/CVE-2026-33756/): Saleor Affected by Denial of Service via Unbounded GraphQL Query Batching (high 7.5)
- [CVE-2026-35401](https://insights.sbomify.com/CVE-2026-35401/): Saleor has a resource exhaustion vulnerability in GraphQL queries (high 7.5)
- [CVE-2026-22849](https://insights.sbomify.com/CVE-2026-22849/): Saleor lacks proper HTML sanitization in rich text fields (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-32694 and fix it if it is affected.

What it is: CVE-2023-32694 is a medium-severity vulnerability in saleor, published on 25 May 2023. 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-2023-32694 in the wild and no public exploit code.

Affected product: saleor. 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-2023-32694/ (Markdown: https://insights.sbomify.com/CVE-2023-32694/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-32694
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-32694
- OSV: https://osv.dev/vulnerability/CVE-2023-32694

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-32694/
Summaries are generated and may contain mistakes; the official description above is the record.