# CVE-2026-115299: Contact Form by Supsystic < 1.11.1 - Arbitrary Plugin Settings Update via CSRF


- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 29 Oct 2026
- **Updated:** 29 Oct 2026
- **Also known as:** GHSA-r32v-cmjq-6cp5

## What is CVE-2026-115299?

CVE-2026-115299 is a medium-severity vulnerability in Unknown Contact Form by Supsystic, published on 29 Oct 2026. 

### Official description

The Contact Form by Supsystic  WordPress plugin before 1.11.1 does not verify a CSRF nonce before saving its mail settings, allowing an attacker to overwrite the site's outbound mail configuration, including the SMTP server, its credentials and the notification recipient, by tricking a logged-in administrator into visiting a crafted page, which can route the Contact Form by Supsystic  WordPress plugin before 1.11.1's contact-form notifications through infrastructure the attacker controls.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2026-115299?


## How do I fix CVE-2026-115299?

No fix has been published for CVE-2026-115299 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-115299 being exploited?

There is no known exploitation of CVE-2026-115299 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-115299 and fix it if it is affected.

What it is: CVE-2026-115299 is a medium-severity vulnerability in Unknown Contact Form by Supsystic, published on 29 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-115299 in the wild and no public exploit code.

Affected product: Unknown Contact Form by Supsystic. 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-2026-115299/ (Markdown: https://insights.sbomify.com/CVE-2026-115299/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-115299
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-115299
- OSV: https://osv.dev/vulnerability/CVE-2026-115299

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-115299/
Summaries are generated and may contain mistakes; the official description above is the record.