# CVE-2026-16128: zevorn rt-claw http_request swarm.c receiver_thread server-side request forgery

> Remote attackers can exploit a server-side request forgery flaw in the rt-claw library's swarm service to access internal resources.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Jul 2026
- **Updated:** 20 Jul 2026
- **Also known as:** GHSA-f2c6-8jg6-287f

## What is CVE-2026-16128?

CVE-2026-16128 is a medium-severity server-side request forgery vulnerability in zevorn rt-claw, published on 18 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A security flaw has been discovered in zevorn rt-claw up to 0.2.0. This impacts the function receiver_thread of the file claw/services/swarm/swarm.c of the component http_request. Performing a manipulation results in server-side request forgery. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-16128?


## How do I fix CVE-2026-16128?

No fix has been published for CVE-2026-16128 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-16128 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16128 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-16128 and fix it if it is affected.

What it is: CVE-2026-16128 is a medium-severity server-side request forgery vulnerability in zevorn rt-claw, published on 18 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16128 exists.

Affected product: zevorn rt-claw. 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-2026-16128/ (Markdown: https://insights.sbomify.com/CVE-2026-16128/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-16128
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-16128
- OSV: https://osv.dev/vulnerability/CVE-2026-16128

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-16128/
Summaries are generated and may contain mistakes; the official description above is the record.