Simon Koeck discloses remote code execution flaw in Google DevSite
Simon Koeck disclosed a remote code execution vulnerability in Google’s shared DevSite platform. The flaw stemmed from a Flask session cookie on developers.google.com that contained its own signing secret in plaintext. Koeck demonstrated that forging a valid session allowed arbitrary code execution across seven Google domains. Google accepted the report in August and fixed the issue on October 7, awarding Koeck a $90,000 bounty.
simonkoeck.com
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HN discussion
Zod 4.6.6 release includes obfuscated code
The Zod 4.6.6 release, described as a bug fix and performance improvement, contains suspicious code changes. The diff introduces obfuscated JavaScript that imports system modules like 'fs' and 'os'. It includes a function that decodes hexadecimal strings into readable text. This pattern is often associated with malware or unauthorized data exfiltration. The release process involves a maintainer running a specific GitHub workflow command and approving the npm environment. The presence of this code in a popular schema validation library raises security concerns for its users.
github.com
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HN discussion
Codex CLI users request opt-in for persistent background daemon
A GitHub issue argues that the Codex CLI should not start a persistent, self-updating background daemon by default. Since version 0.157.0, opening an interactive session launches a detached daemon that survives after the window closes and copies the entire package locally. This decouples the backend version from the user's package manager and triggers automatic updates that can interrupt active tasks. The reporter suggests making this behavior opt-in or requiring explicit confirmation before activation.
github.com
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HN discussion
A documented FMA instruction raises undefined instruction exceptions on supported hardware
A developer discovered that vfmaddrnd231pd, a fused multiply-add instruction with per-instruction rounding control, is documented in the 2024 Intel Software Development Manual but fails to execute on Haswell hardware, raising an undefined instruction exception. The instruction is absent from the 2026 SDM edition, and GNU assembler does not recognize it. Intrinsics mentioned in the documentation are missing from both Clang and Intel compilers. The author hypothesizes that Intel removed the instruction from the CPU due to a late-stage issue but failed to fully remove it from earlier documentation versions.
purplesyringa.moe
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HN discussion
Janas streams LLM experts from SSD to run models larger than RAM
Janas-LLM, a pure C tool by Maurizio Cammalleri, runs large mixture-of-experts models on standard laptops by streaming required experts from an NVMe SSD while caching frequent ones in memory. This allows a 48 GB Qwen3-Next-80B model to operate on a 32 GB machine. Benchmarks show it achieving 37 tok/s for generation and 62 tok/s for prompt reading, significantly outperforming llama.cpp on the same hardware. The project is an experimental tool, not a product, with a changing API and strict system resource usage.
github.com
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HN discussion
Developer ships commercial web product using C, CGI, and SQLite
A developer has shipped marketyour.games, a commercial web product built entirely in C and served via CGI. The application handles user accounts, payments through Stripe, and transactional emails using a single statically linked binary and a SQLite file. The author argues that this approach eliminates the complexity of traditional application servers and reduces supply chain risks by limiting dependencies to just three libraries. The system runs on OpenBSD, where each request spawns a fresh process, allowing for zero-downtime deployments by simply replacing the executable file.
prophitt.me
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HN discussion