UltraJSON 安全漏洞

UltraJSON is an open-source, ultra-fast JSON encoder and decoder written in pure C language, and compatible with Python 3.7+. Versions of UltraJSON 5.11.0 and earlier contained security vulnerabilities; these vulnerabilities stemmed from buffer overflows or infinite loops during processing of lar...

CVE-2026-32875

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Versions 5.10 through 5.11.0 are vulnerable to buffer overflow or infinite loop through large indent handling. ujson.dumps crashes the Python interpreter segmentation fault when the product of the indent...

PYSEC-2022-25

UltraJSON aka ujson through 5.1.0 has a stack-based buffer overflow in BufferAppendIndentUnchecked called from encode. Exploitation can, for example, use a large amount of indentation...