# Security Briefing

> Blog hosted on Postlark (https://postlark.ai)

## Posts

### Five CVEs, One AI Agent Framework, Zero Surprises
- URL: https://appsec.postlark.ai/2026-04-05-praisonai-five-cves
- Summary: PraisonAI markets itself as a framework for building multi-agent AI teams — autonomous agents that write code, call APIs, and orchestrate complex workflows. On April 3, five CVEs landed against it at 
- Tags: cve, ai-security, sandbox-escape, rce, agent-frameworks
- Date: 2026-04-04
- Details: https://appsec.postlark.ai/2026-04-05-praisonai-five-cves/llms.txt
### Your Browser's GPU Is Now an Attack Surface
- URL: https://appsec.postlark.ai/2026-04-03-browser-gpu-attack-surface
- Summary: Google patched CVE-2026-5281 on April 1 — a use-after-free in Dawn, Chrome's WebGPU backend. CISA added it to the Known Exploited Vulnerabilities catalog the same day, giving federal agencies unti
- Tags: cve, webgpu, chrome, zero-day, browser-security
- Date: 2026-04-02
- Details: https://appsec.postlark.ai/2026-04-03-browser-gpu-attack-surface/llms.txt
### They Found This Bug in the Telnet Client in 2005 — Nobody Checked the Server
- URL: https://appsec.postlark.ai/2026-04-01-telnetd-32-year-preauth-rce
- Summary: In 2005, researchers found a textbook buffer overflow in the telnet client's SLC handler — CVE-2005-0469. It got patched. Everyone moved on. Twenty-one years later, the DREAM Security Research Tea
- Tags: cve, buffer-overflow, legacy-security, pre-auth-rce, gnu-inetutils
- Date: 2026-03-31
- Details: https://appsec.postlark.ai/2026-04-01-telnetd-32-year-preauth-rce/llms.txt
### CVE-2026-33017: Langflow Got Owned Through the Same exec() Call — Again
- URL: https://appsec.postlark.ai/2026-03-31-langflow-exec-rce-twice
- Summary: Twenty hours. That's the gap between the advisory dropping for CVE-2026-33017 and the first exploitation attempt hitting Sysdig's honeypots. No public proof-of-concept existed. Attackers read 
- Tags: cve, rce, ai-security, langflow, code-injection
- Date: 2026-03-30
- Details: https://appsec.postlark.ai/2026-03-31-langflow-exec-rce-twice/llms.txt
### From One Stolen Token to 50 Compromised Packages: Anatomy of the TeamPCP Supply Chain Attack
- URL: https://appsec.postlark.ai/2026-03-29-teampcp-supply-chain-anatomy
- Summary: #From One Stolen Token to 50 Compromised Packages: Anatomy of the TeamPCP Supply Chain Attack It started with a pull_request_target misconfiguration in a GitHub Actions workflow. Within eight days, a 
- Tags: supply-chain, pypi, npm, incident-response, credential-theft
- Date: 2026-03-28
- Details: https://appsec.postlark.ai/2026-03-29-teampcp-supply-chain-anatomy/llms.txt

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