# CVE-2026-5966: TeamT5｜ThreatSonar Anti-Ransomware - Arbitrary File Deletion

> Authenticated attackers can exploit path traversal to delete arbitrary files on systems running ThreatSonar Anti-Ransomware.

- **Severity:** High 7.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Apr 2026
- **Updated:** 20 Apr 2026
- **Also known as:** GHSA-544v-v93w-x43g

## What is CVE-2026-5966?

CVE-2026-5966 is a high-severity path traversal vulnerability in TeamT5 ThreatSonar Anti-Ransomware, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

ThreatSonar Anti-Ransomware developed by TeamT5 has an Arbitrary File Deletion vulnerability. Authenticated remote attackers with web access can exploit Path Traversal to delete arbitrary files on the system.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), CWE-23 (Relative Path Traversal)

## Which versions are affected by CVE-2026-5966?

It affects 1 product.


Products: Teamt5 Threatsonar Anti-Ransomware.

## How do I fix CVE-2026-5966?

No fix has been published for CVE-2026-5966 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5966 being exploited?

There is no known exploitation of CVE-2026-5966 in the wild and no public exploit code.

## Other vulnerabilities in TeamT5 ThreatSonar Anti-Ransomware

- [CVE-2024-7694](https://insights.sbomify.com/CVE-2024-7694/): TeamT5 ThreatSonar Anti-Ransomware Unrestricted Upload of File with Dangerous Type (high 7.2, exploited in the wild)
- [CVE-2026-5967](https://insights.sbomify.com/CVE-2026-5967/): TeamT5｜ThreatSonar Anti-Ransomware - Privilege Escalation (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5966 and fix it if it is affected.

What it is: CVE-2026-5966 is a high-severity path traversal vulnerability in TeamT5 ThreatSonar Anti-Ransomware, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-5966 in the wild and no public exploit code.

Affected product: TeamT5 ThreatSonar Anti-Ransomware. 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-2026-5966/ (Markdown: https://insights.sbomify.com/CVE-2026-5966/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5966
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5966
- OSV: https://osv.dev/vulnerability/CVE-2026-5966

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5966/
Summaries are generated and may contain mistakes; the official description above is the record.