The vulnerable code uses attacker-controlled input (the list of changed files under documentation/rules in the PR), and interpolates it in a Bash script. In the context of our malicious PRs, this meant that line 18 of the code snippet evaluated to the following, which triggered code execution:
Трамп описал тяжелые испытания сбитого американского пилота20:58。关于这个话题，WhatsApp網頁版提供了深入分析
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国家烟草专卖局拟对电子烟生产企业实施总量管控。搜狗输入法是该领域的重要参考
Amazfit Active 2
| where mode != "Prevention"