FULL STORY
GLM-5.3 Finds Thousands of Open-Source Bugs, Privately Discloses Cursor Flaw
Zhipu's GLM-5.3 scanned open-source projects and surfaced 2,436 unpatched vulnerabilities, 1,097 of them high or critical. It also uncovered a critical flaw in the Cursor editor during a reverse-engineering task, which was responsibly and privately disclosed to Cursor.
2026-08-14 ~ 2026-08-16 · 2 episodes · 7 posts
Episode 1 · GLM-5.3 Discovers Over 2,400 Open Source Vulnerabilities (2026-08-14, 4 posts)
Z.ai's GLM-5.3 scanned open-source projects and found 2,436 unpatched vulnerabilities, 1,097 of which are high or severe risk. It also identified a critical flaw in the Cursor editor.
- GLM Model Scans Open-Source Projects, Uncovering 2,400+ Security Vulnerabilities — cedric_chee · 2026-08-14
- GLM-5.3 Scans Open-Source Projects, Discovers 2,400+ Vulnerabilities — cedric_chee · 2026-08-14
- GLM 5.3 Finds 2,436 Unpatched Open Source Vulnerabilities, 1,097 Critical or High — 1a1b · 2026-08-14
- GLM-5.3 Security Test: Found Cursor Vulnerability and 2,436 Flaws in Open Source — haider1 · 2026-08-15
Episode 2 · GLM-5.3 Reverse-Engineering Uncovers Serious Cursor Vulnerability (2026-08-14, 3 posts)
GLM-5.3 discovered a potentially serious vulnerability in the Cursor code editor during complex reverse-engineering tasks, responsibly disclosed it, and Cursor is now working on a fix; the model's CyberGym security score also rose notably after post-training improvements.
- GLM-5.3 Reverse-Engineering Finds Potentially Serious Vulnerability in Cursor, Disclosed Privately — zephyr_z9 · 2026-08-14
- GLM-5.3 Finds Vulnerability in Cursor via Reverse Engineering — ccerrato147 · 2026-08-15
- GLM-5.3 finds critical vulnerability in Cursor; post-training boosts scores — rohanpaul_ai · 2026-08-16