Read the docs
TI-2026-47511 Aliases CVE-2026-67184GHSA-r4g2-gw8j-xgxv

TinyWeb 0.0.8 Null Pointer Dereference DoS via Malformed HTTP Request

Priority HIGH 77CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

TinyWeb through 0.0.8 contains a null pointer dereference vulnerability that allows unauthenticated remote attackers to crash worker processes by sending a malformed HTTP request line with an invalid version string. The HttpParser::execute() function fails to allocate the Url object when version parsing fails, leaving the url pointer NULL, and buildResponse() subsequently dereferences this NULL pointer without checking the valid_requ flag, producing a SIGSEGV that terminates the worker process and, when repeated across all workers, takes the server permanently offline until manually restarted.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00608 49th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GeneralSandmanTinyWeb0.0.8 and later—No fix listedCNA
  • TinyWeb VendorGeneralSandman Affected 0.0.8 and later Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-67184
  2. 2026-10-03 Alias added: GHSA-r4g2-gw8j-xgxv

References

Exploit 1

  • TI-2026-47512 TinyWeb 0.0.8 Path Traversal via URL Path Component CVSS 4.0HIGH 8.7
  • TI-2026-47510 TinyWeb 0.0.8 Memory Leak DoS via HTTP Request Handling CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences