EIP-2026-103438

PRE-CVE

Chrome V8 JIT - Empty BytecodeJumpTable Out-of-Bounds Read

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-103438. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC exploits an out-of-bounds read vulnerability in V8's bytecode generator due to empty jump tables in generator functions. The issue arises in `JumpTableTargetOffsets::iterator::UpdateAndAdvanceToValid`, where `table_offset_` can exceed `table_end_`, leading to memory corruption.

Description

Chrome V8 JIT - Empty BytecodeJumpTable Out-of-Bounds Read

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · javascriptdosmultiple
https://www.exploit-db.com/exploits/44260

This PoC exploits an out-of-bounds read vulnerability in V8's bytecode generator due to empty jump tables in generator functions. The issue arises in `JumpTableTargetOffsets::iterator::UpdateAndAdvanceToValid`, where `table_offset_` can exceed `table_end_`, leading to memory corruption.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Google V8 JavaScript Engine (Chromium)
No auth needed
Prerequisites: V8 engine with vulnerable bytecode generator
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026