libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.

中危 CVSS 4.9

CVECVE-2026-76957

首次发现2026-08-20 08:30 UTC

披露时间2026-08-20 05:16 UTC

最后更新2026-08-20 08:30 UTC

通道状态auto

摘要

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.

中文摘要建设中，暂以英文摘要呈现（DR-003 v2）。

深度研判

该漏洞尚未生成深度研判报告（DR-003 v2 AI pipeline 建设中）。

数据来源

NVD DATABASE

原始链接

https://github.com/libexpat/libexpat/pull/1322
https://github.com/libexpat/libexpat/pull/1329

时间线

2026-08-20 nvd_ingest NVD