EIP-2026-102686

PRE-CVE

Mozilla Firefox 1.0.x/1.5 - HTML Parsing Null Pointer Dereference Denial of Service

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-102686. PoCs published by Thomas Waldegger.

AI-analyzed exploit summary This exploit demonstrates a denial-of-service vulnerability in Mozilla Firefox by using malformed HTML content. The specific combination of tags causes the browser to fail or hang.

Description

Mozilla Firefox 1.0.x/1.5 - HTML Parsing Null Pointer Dereference Denial of Service

Exploits (1)

exploitdb WORKING POC VERIFIED
by Thomas Waldegger · textdoslinux
https://www.exploit-db.com/exploits/27635

This exploit demonstrates a denial-of-service vulnerability in Mozilla Firefox by using malformed HTML content. The specific combination of tags causes the browser to fail or hang.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Mozilla Firefox versions 1.5.0.1 and prior
No auth needed
Prerequisites: A vulnerable version of Mozilla Firefox · Ability to deliver malformed HTML content to the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026