Numerical Security Analysis for Practical Quantum Key Distribution

Quantum key distribution QKD promises information-theoretic security based on quantum mechanics and idealized device models. Practical implementations, however, deviate from these models due to unavoidable device imperfections, and existing security proofs fall short of capturing the complexity o...

Backdoor Threats in Variational Quantum Circuits: Taxonomy, Attacks, and Defenses

Variational quantum algorithms VQAs are a central paradigm for noisy intermediate-scale NISQ quantum computing, yet their reliance on predesigned and pretrained variational quantum circuits VQCs introduces critical security vulnerabilities, particularly backdoor attacks. These attacks embed hidde...

State of ransomware in 2026

With International Anti-Ransomware Day taking place on May 12, Kaspersky presents its annual report on the evolving global and regional ransomware cyberthreat landscape. Ransomware remains one of the most persistent and adaptive cyberthreats. In 2026: New families continue to emerge, adopting...

Security of Decoy-State Quantum Key Distribution with Correlated Bit-And-Basis Encoders

Practical quantum key distribution QKD modulators inevitably introduce correlations, causing the state emitted in a given round to depend on the setting choices made in previous rounds. These correlations break the round-by-round independence structure on which many widely used security proof...

Unity Linux 20.1060e / 20.1070e Security Update: ImageMagick (UTSA-2026-017620)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017620 advisory. A flaw was found in ImageMagick in MagickCore/quantum-export.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined...

Key Encapsulation Mechanism-Based Integrated Encryption Scheme (KEM-IES)

The Elliptic Curve Integrated Encryption Scheme ECIES is widely regarded as a practical method and has been adopted by multiple standards. However, the advancement of quantum computing technologies poses potential security risks to ECIES. Therefore, this study proposes a Key Encapsulation...

Unity Linux 20.1060e / 20.1070e Security Update: ImageMagick (UTSA-2026-017602)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017602 advisory. A flaw was found in ImageMagick in MagickCore/quantum.h. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in...

@activepieces/piece-ai (>=0.3.1, <=0.3.4), @middy/validator (>=5.4.3, <=5.4.4) +4 more potentially affected by CVE-2026-6322 via fast-uri (>=3.0.1, <=3.1.0)

fast-uri NPM version =3.0.1, =0.3.1, =5.4.3, =1.0.0, =1.0.0, =2.2.0, =2.3.1 Source cves: CVE-2026-6322 Source advisory: OSV:GHSA-V39H-62P7-JPJC...

CVE-2026-41509

CROSS implementation contains reference and optimized implementations of the CROSS post-quantum signature algorithm. Prior to commit fc6b7e7, there is a buffer overflow in cryptosignopen caused by an underflow of the integer mlen. This issue has been patched via commit fc6b7e7...

EUVD-2026-28598

CROSS implementation contains reference and optimized implementations of the CROSS post-quantum signature algorithm. Prior to commit fc6b7e7, there is a buffer overflow in cryptosignopen caused by an underflow of the integer mlen. This issue has been patched via commit fc6b7e7...

CVE-2026-41509 Integer underflow in crypto_sign_open() leads to buffer overflow

CROSS implementation contains reference and optimized implementations of the CROSS post-quantum signature algorithm. Prior to commit fc6b7e7, there is a buffer overflow in cryptosignopen caused by an underflow of the integer mlen. This issue has been patched via commit fc6b7e7...

CVE-2026-41509

The CVE-2026-41509 entry concerns the CROSS implementation of the CROSS post-quantum signature algorithm. A buffer overflow in crypto_sign_open() was caused by an underflow of the length field (mlen) before commit fc6b7e7. This underflow vulnerability could enable an overflow during signature ver...

CVE-2026-41509 Integer underflow in crypto_sign_open() leads to buffer overflow

CROSS implementation contains reference and optimized implementations of the CROSS post-quantum signature algorithm. Prior to commit fc6b7e7, there is a buffer overflow in cryptosignopen caused by an underflow of the integer mlen. This issue has been patched via commit fc6b7e7...

PT-2026-38965

CROSS implementation contains reference and optimized implementations of the CROSS post-quantum signature algorithm. Prior to commit fc6b7e7, there is a buffer overflow in crypto sign open caused by an underflow of the integer mlen. This issue has been patched via commit fc6b7e7...

GHSA-MMPX-JH39-WRV6 FileBrowser Vulnerable to Stored XSS via SVG File in Public Share (Missing CSP Header)

Summary FileBrowser Quantum serves inline SVG files without a Content-Security-Policy header, allowing embedded JavaScript in SVG files to execute when accessed via public share links. Verified on v1.3.0-stable. Affected product - Product: FileBrowser Quantum gtsteffaniak/filebrowser - Verified...

FileBrowser Vulnerable to Stored XSS via SVG File in Public Share (Missing CSP Header)

Summary FileBrowser Quantum serves inline SVG files without a Content-Security-Policy header, allowing embedded JavaScript in SVG files to execute when accessed via public share links. Verified on v1.3.0-stable. Affected product - Product: FileBrowser Quantum gtsteffaniak/filebrowser - Verified...

MAGIQ: A Post-Quantum Multi-Agentic AI Governance System with Provable Security

Our computing ecosystem is being transformed by two emerging paradigms: the increased deployment of agentic AI systems and advancements in quantum computing. With respect to agentic AI systems, one of the most critical problems is creating secure governing architectures that ensure agents follow...

Security Bulletin: IBM Quantum Safe Explorer is affected by multiple vulnerabilities

Summary The vulnerabilities are found in the dependent open source libraries used in IBM Quantum Safe Explorer code base. IBM Quantum Safe Explorer has addressed these vulnerabilities by updating the versions of the affected libraries. Vulnerability Details CVEID:CVE-2025-67030 DESCRIPTION:...

Fundamental Limitations of Post-Quantum Cryptographic Architectures

Modern lattice-based cryptography, particularly the learning with errors paradigm, relies on injecting artificial noise to secure data against quantum adversaries. This study systematically examines the theoretical and physical boundaries of this noise-reliant model across four interconnected...

Observability for Post-Quantum TLS Readiness: A Multi-Surface Evidence Framework

Post-quantum migration in Transport Layer Security TLS requires evidence-aware measurements that distinguish session negotiation, endpoint capability, certificate-chain evidence, and the provenance of missing observations. This distinction is essential under TLS 1.3 encryption, resumption, mutual...