Hello.
The main topics for this week are:
- OpenAI announces coding-specialized "GPT-5.2-Codex"
- Google releases fast and affordable "Gemini 3 Flash"
- Critical vulnerability "React2Shell" discovered in React Server Components
Towards the end of the year, the competition between OpenAI and Google is intensifying again. On the other hand, it was a week where security awareness was also questioned, with a critical vulnerability found in the React ecosystem, the foundation of modern web development.
The "Hands" and "Eyes" of AI Agents
This week, not only the improvement of AI model intelligence but also the expansion of execution capabilities—what AI "can do"—stood out.
OpenAI's "GPT-5.2-Codex" goes beyond simple code generation, enhancing its capabilities as an agent that handles complex engineering tasks. Meanwhile, Anthropic has given Claude browser manipulation capabilities (Chrome plugin) and is moving to build an ecosystem for AI to master external tools by making "Agent Skills" an open standard.
A future where AI writes code, operates browsers, and completes tasks is becoming a reality. For developers, the skill as a "conductor" giving instructions to AI and the responsibility as a "gatekeeper" auditing the deliverables and actions generated by AI will become more important.
Vulnerabilities like "React2Shell" suggest the risk of AI being used for attacks, but at the same time, it is a field where defense and automated correction by AI are expected. As the speed of offense and defense accelerates, we are forced to rethink how we should face technology.
Notes
- Focuses on recently collected AI and Web-related news.
- Dates may vary slightly.
New AI Models, Services, and Updates
OpenAI: OpenAI Announces GPT-5.2-Codex and New Version of ChatGPT Images
OpenAI announced "GPT-5.2-Codex," optimized for complex software engineering. They also released "ChatGPT Images" equipped with a new image generation model capable of faster and more accurate editing, countering Google's Gemini 3.
The GPT-5.2-based coding-specialized model and new image generation features directly lead to improved developer productivity and efficiency in creative work. Technological evolution is accelerating due to intensifying competition with Google.
Sources
Google: Google Releases Gemini 3 Flash, Makes it Default for Gemini App
Google released "Gemini 3 Flash," which is faster and cheaper while retaining the reasoning capabilities of Gemini 3 Pro. It has been adopted as the default model for the Gemini app, strengthening its counter to OpenAI.
The launch of the fast and affordable Gemini 3 Flash lowers the cost of using high-performance AI, making integration into apps and daily use easier.
Sources
Anthropic: Anthropic Releases Claude Chrome Plugin and Agent Skills
Anthropic released a Chrome plugin for paid users that allows Claude to operate web browsers. They also enhanced "Skills" functions for business automation and made it an open standard available for other tools.
Standardization of browser manipulation functions and agent skills enables AI agents to execute actual web tasks, significantly expanding the scope of business automation.
Sources
Other AI Topics
9to5Google: Gemini Deep Research Now Supports Image and Chart Generation
The Deep Research feature of the Gemini app has been updated to generate visual reports including custom images, charts, and interactive simulations, in addition to text.
The addition of visualization features for research reports makes it easier to understand and share complex information, improving the quality and speed of research work.
Sources
Web Development Topics
CSO Online: Critical Vulnerability "React2Shell" in React Server Components
A critical vulnerability (CVE-2025-55182) affecting React Server Components (RSC) and Next.js is being exploited. Remote code execution is possible without authentication, and many organizations are being targeted.
There are concerns about the sophistication of attack methods and the expansion of damage. Urgent patch application for Web applications using Next.js etc. is necessary, reaffirming the importance of security awareness in front-end development.
Sources
Other General Tech Topics
9to5Google: Pixel December Update Fixes Battery and Touch Issues
Google rolled out the December update (Android 16 QPR2) for the Pixel series. It fixed 33 issues, including battery drain and touch glitches on the Pixel 10.
Bug fixes and stability improvements improve the UX for Pixel users. Improvements in battery life and operability are particularly important.
Sources