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Insights, updates, and deep dives on AI agents, decentralized standards, and the future of HOL.
Opening a LibreOffice spreadsheet can run remote Java code (CVE-2026-63277)
How to fix CVE-2026-63277: upgrade LibreOffice to 26.2.5 or 26.8.0. A saved Calc external data link could load a remote Java driver on open; five sibling file-read, file-write and SSRF bugs are fixed in the same release.
BREAKING: NetScaler SAML memory overflow hits CISA KEV
How to fix CVE-2026-88779: upgrade NetScaler ADC/Gateway to 14.1-73.41 or 13.1-64.28 (SAML SP/IdP builds)
HOL Guard
Zammad session fixation to root hits CISA KEV
How to fix CVE-2026-102489: upgrade Zammad to 7.2.0 (leave 6.5 EOL trains; chain with CVE-2026-102490)
HOL Guard
FortiMail unauthenticated path traversal hits CISA KEV
How to fix CVE-2026-104286: disable FortiMail IBE (config system encryption ibe / set status disable) or upgrade to upcoming 8.0.2 / 7.6.7 / 7.4.9
HOL Guard
BREAKING: Next.js image optimizer SSRF and cache poisons in September 2026 release
How to fix CVE-2026-94483: upgrade next to 15.5.27 or 16.3.8
HOL Guard
Cisco SD-WAN Manager admin API bypass hits CISA KEV
How to fix CVE-2026-76504: upgrade Cisco Catalyst SD-WAN Manager to 20.9.10.1 / 20.12.8.2 / 20.15.6.1 / 20.18.4.1 / 26.1.2.1 / 26.2.1
HOL Guard
BREAKING: Cisco SD-WAN Manager admin API open without a login (CVE-2026-76504)
How to fix CVE-2026-76504: upgrade Cisco Catalyst SD-WAN Manager to 20.9.10.1 / 20.12.8.2 / 20.15.6.1 / 20.18.4.1 / 26.1.2.1 / 26.2.1
HOL Guard
Apple CoreGraphics file OOB write hits CISA KEV
How to fix CVE-2026-86950: update to iOS/iPadOS 26.7.1, macOS Sequoia 15.8.1, or macOS Tahoe 26.7.1
HOL Guard
Claude Code approved itself: Guard paused the self-click
Claude Code hit a warning, then ran hol-guard approvals approve on itself. HOL Guard froze it. Inbox: Allow just this once or Keep blocked.
HOL Guard
Unsloth RCE: malicious Hugging Face model config.json injects code
How to fix CVE-2026-93348: upgrade unsloth-zoo to 2026.8.14+ and unsloth to 2026.8.20+
HOL Guard
BREAKING: Unauthenticated NetScaler RCE hits every appliance (CVE-2026-88771)
How to fix CVE-2026-88771: upgrade NetScaler ADC/Gateway to 14.1-73.37 or 13.1-64.23
HOL Guard
WordPress page template include hits CISA KEV
How to fix CVE-2026-87902: upgrade WordPress to 7.1.2 (or your branch patch).
HOL Guard
SharePoint code injection hits CISA KEV
How to fix CVE-2026-65660: upgrade SharePoint Server to the August 2026 fixed builds (SE 16.0.19725.20522 / 2019 16.0.10417.20198 / 2016 16.0.5565.1001)
HOL GuardHOL Guard research desk
Security research for the AI agent era
Threat guides and evidence dossiers on prompt injection, MCP tool poisoning, slopsquatting, and the attacks shaping how teams ship code with agents.
Prompt injection
How hidden instructions trick coding agents into unsafe work.
Read the researchEvergreen guideMCP security
Tool poisoning, overbroad permissions, and shadow MCP servers.
Read the researchNew dossierSlopsquatting and package hallucination
Slopsquatting is the supply-chain attack in which attackers register package names that AI models reliably hallucinate; when an agent writes an import for a package that never existed, the attacker’s registered code installs instead.
Read the researchNew dossierMalicious extensions and marketplace fraud
Malicious extensions and marketplace fraud place trojanized editor extensions, plugins, or CI actions inside trusted marketplaces, harvesting source code, prompts, and credentials from every developer who installs them.
Read the research