FunFuzz: An LLM-Powered Evolutionary Fuzzing Framework

Modern fuzzers increasingly use Large Language Models LLMs to generate structured inputs, but LLM-driven fuzzing is sensitive to prompt initialization and sampling variance, which can reduce exploration efficiency and lead to redundant inputs. We present FunFuzz, a multi-island evolutionary fuzzi...

OSV-2026-655 Heap-buffer-overflow in lj_record_idx

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=507646002 Crash type: Heap-buffer-overflow WRITE 8 Crash state: ljrecordidx ljrecordins tracestate...

WP-Plugin-Fuzzer-PoC-

wpgarlic A proof-of-concept WordPress plugin fuzzer that led t...

From CRUD to Autonomous Agents: Formal Validation and Zero-Trust Security for Semantic Gateways in AI-Native Enterprise Systems

Enterprise software engineering is shifting away from deterministic CRUD/REST architectures toward AI-native systems where large language models act as cognitive orchestrators. This transition introduces a critical security tension: probabilistic LLMs weaken classical mechanisms for validation,...

CLSA-2026-1775726631 binutils: Fix of 9 CVEs

CVE-2023-1972: fix heap buffer overflow in bfdelfslurpversiontables - CVE-2025-11412: fix out-of-bounds read in bfdelfgcrecordvtentry - CVE-2025-11413: fix out-of-bounds read in elflinkaddobjectsymbols - CVE-2025-11839: fix abort in tgtagtype with fuzzed input - CVE-2025-11840: fix SEGV from NULL...

Keras 3.13.0 HDF5 Shape Fuzzing for Robustness Testing

This script performs fuzz testing against Keras version 3.13.0 on randomly generated tensor shapes using NumPy and HDF5 to evaluate stability and error handling in file creation workflows...

OSV-2026-599 UNKNOWN READ in XRef::parseEntry

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=504271260 Crash type: UNKNOWN READ Crash state: XRef::parseEntry XRef::getEntry Parser::makeStream...

DNG File Fuzzer for Robustness

This Python script is a mutation-based fuzzing tool designed to test the robustness of DNG Digital Negative / TIFF-based file parsers by generating large numbers of corrupted or semi-valid image files. It works by starting from a minimal valid DNG structure, then applying random mutations to...

OSV-2026-595 UNKNOWN WRITE in std::__1::istreambuf_iterator<char, std::__1::char_traits<char>> std::__1::num_g

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=504141064 Crash type: UNKNOWN WRITE Crash state: std::1::istreambufiterator std::1::numg std::1::basicistream& std::1::inputar igl::MshLoader::parseelementfield...

SDLLMFuzz: Dynamic-Static LLM-Assisted Greybox Fuzzing for Structured Input Programs

Fuzzing has become a widely adopted technique for vulnerability discovery, yet it remains ineffective for structured-input programs due to strict syntactic constraints and limited semantic awareness. Traditional greybox fuzzers rely on mutation-based strategies and coarse-grained coverage feedbac...

catbyte-toolkit

cb - Binary Analysis Toolkit for macOS/iOS Security Research...

TEMPLATEFUZZ: Fine-Grained Chat Template Fuzzing for Jailbreaking and Red Teaming LLMs

Large Language Models LLMs are increasingly deployed across diverse domains, yet their vulnerability to jailbreak attacks, where adversarial inputs bypass safety mechanisms to elicit harmful outputs, poses significant security risks. While prior work has primarily focused on prompt injection...

OpenEXR Makes Use of Uninitialized Memory

Summary While fuzzing openexrexrcheckfuzzer, Valgrind reports a conditional branch depending on uninitialized data inside genericunpack. This indicates a use of uninitialized memory CWE-457. The issue is reproducible with the current OSS-Fuzz harness and a single-file PoC. Details Environment: -...

GHSA-3H9H-QFVW-98HQ OpenEXR Makes Use of Uninitialized Memory

Summary While fuzzing openexrexrcheckfuzzer, Valgrind reports a conditional branch depending on uninitialized data inside genericunpack. This indicates a use of uninitialized memory CWE-457. The issue is reproducible with the current OSS-Fuzz harness and a single-file PoC. Details Environment: -...

OSV-2026-534 Heap-buffer-overflow in cram_encode_container

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=499447432 Crash type: Heap-buffer-overflow READ 1 Crash state: cramencodecontainer cramflushcontainermt cramclose...

Triggering and Detecting Exploitable Library Vulnerability from the Client by Directed Greybox Fuzzing

Developers utilize third-party libraries to improve productivity, which also introduces potential security risks. Existing approaches generate tests for public functions to trigger library vulnerabilities from client programs, yet they depend on proof-of-concepts PoCs, which are often unavailable...

OSV-2026-518 Use-of-uninitialized-value in ne_read_block

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=498498500 Crash type: Use-of-uninitialized-value Crash state: nereadblock nesteggreadpacket fuzz.cc...

Enhancing REST API Fuzzing with Access Policy Violation Checks and Injection Attacks

Due to their widespread use in industry, several techniques have been proposed in the literature to fuzz REST APIs. Existing fuzzers for REST APIs have been focusing on detecting crashes e.g., 500 HTTP server error status code. However, security vulnerabilities can have major drastic consequences...

penclaw

🦀 PenClaw AI-powered penetration testing CLI. One command...

OSV-2026-455 UNKNOWN READ in mkv::matroska_segment_c::TrackInit

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=495498906 Crash type: UNKNOWN READ Crash state: mkv::matroskasegmentc::TrackInit mkv::matroskasegmentc::TrackInit mkv::matroskasegmentc::ParseTrackEntry...