# CVE-2026-67184: GeneralSandman TinyWeb null pointer dereference in HttpParser

Source: https://junglewise.ai/threats/cve-2026-67184-generalsandman-tinyweb-null-pointer-dereference-in-httpparser  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-28. Updated: 2026-07-28  
License: CC BY 4.0 with a link back

CVE-2026-67184 · Severity: high · CVSS 7.5 · Published 2026-07-28

TinyWeb, a lightweight web server, is vulnerable to a flaw that allows an unauthenticated remote attacker to crash the service. By sending a specially crafted, malformed web request, an attacker can force the server's background processes to fail. If repeated, this attack takes the entire server offline, requiring a manual restart to restore operations.

Technologies: [GeneralSandman TinyWeb](https://junglewise.ai/threats/technologies/tinyweb). Vendors: [GeneralSandman](https://junglewise.ai/threats/vendors/generalsandman).

## Quick answers

**Is CVE-2026-67184 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-67184 being exploited in the wild.

**How severe is CVE-2026-67184?** High severity, with a CVSS score of 7.5, published 28 July 2026.

**Which products and versions are affected?** GeneralSandman TinyWeb 0.0.8 and all commits from e48f15d through a381da2.

**Is there a fix for CVE-2026-67184?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-67184 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-67184?** Check whether you run GeneralSandman TinyWeb at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A NULL pointer dereference exists in TinyWeb through version 0.0.8 within the HTTP parsing and response logic. When `HttpParser::execute()` encounters an invalid HTTP version string (e.g., 'XTTP/1.1'), it fails to allocate the `Url` object and returns an error. However, `WebProtocol::dataReceived()` ignores this error state and proceeds to call `buildResponse()`, which attempts to dereference the uninitialized (NULL) `url` pointer. This results in a SIGSEGV crash of the worker process. An unauthenticated remote attacker can exhaust the worker pool with a small number of requests, leading to a persistent denial-of-service (DoS) condition until the service is manually restarted.

## Affected products

- GeneralSandman TinyWeb 0.0.8 and all commits from e48f15d through a381da2

## Timeline

- 2026-07-28: disclosed: Vulnerability disclosed by researcher Theodosis Paidakis
- 2026-07-28: advisory: NVD and VulnCheck published advisories

## References

- [https://github.com/theopaid/Unauthenticated-NULL-Pointer-Dereference-Crashes-the-Server-TinyWeb-](https://github.com/theopaid/Unauthenticated-NULL-Pointer-Dereference-Crashes-the-Server-TinyWeb-)
- [https://www.vulncheck.com/advisories/tinyweb-null-pointer-dereference-dos-via-malformed-http-request](https://www.vulncheck.com/advisories/tinyweb-null-pointer-dereference-dos-via-malformed-http-request)

## Related threats

- [GeneralSandman TinyWeb path traversal in HttpBuilder](https://junglewise.ai/threats/cve-2026-67185-generalsandman-tinyweb-path-traversal-in-httpbuilder)