# CVE-2023-40599: Denial of service in Mailform Pro CGI

> Remote unauthenticated attackers can cause denial of service in Mailform Pro CGI add-ons via regular expression DoS.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Aug 2023
- **Updated:** 2 Oct 2024
- **Also known as:** GHSA-h2gh-pw44-5qf5

## What is CVE-2023-40599?

CVE-2023-40599 is a high-severity denial of service vulnerability in SYNCK GRAPHICA Mailform Pro CGI, published on 25 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Regular expression Denial-of-Service (ReDoS) exists in multiple add-ons for Mailform Pro CGI 4.3.1.3 and earlier, which allows a remote unauthenticated attacker to cause a denial-of-service condition. Affected add-ons are as follows: call/call.js, prefcodeadv/search.cgi, estimate/estimate.js, search/search.js, suggest/suggest.js, and coupon/coupon.js.

Weakness: CWE-1333 (Inefficient Regular Expression Complexity)

## Which versions are affected by CVE-2023-40599?

It affects 1 product.


Products: Synck Graphica Mailform Pro Cgi.

## How do I fix CVE-2023-40599?

No fix has been published for CVE-2023-40599 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-40599 being exploited?

There is no known exploitation of CVE-2023-40599 in the wild and no public exploit code.

## Other vulnerabilities in SYNCK GRAPHICA Mailform Pro CGI

- [CVE-2015-0883](https://insights.sbomify.com/CVE-2015-0883/): Code injection in n/a (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-40599 and fix it if it is affected.

What it is: CVE-2023-40599 is a high-severity denial of service vulnerability in SYNCK GRAPHICA Mailform Pro CGI, published on 25 Aug 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-2023-40599 in the wild and no public exploit code.

Affected product: SYNCK GRAPHICA Mailform Pro CGI. 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-2023-40599/ (Markdown: https://insights.sbomify.com/CVE-2023-40599/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-40599
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-40599
- OSV: https://osv.dev/vulnerability/CVE-2023-40599

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-40599/
Summaries are generated and may contain mistakes; the official description above is the record.