CVE-2026-47770— jqlang jq 资源管理错误漏洞

jq: stack overflow in deep structural equality

jq is a command-line JSON processor. Prior to 1.8.2, comparing two sufficiently deeply nested arrays with the == operator exhausts the C stack on jq's ordinary command-line surface, resulting in denial of service via stack exhaustion (uncontrolled recursion). The crash occurs in jq's recursive structural comparison code, with the recursion repeating through jvp_array_equal() and jv_equal() in src/jv.c when comparing deeply nested arrays; a nearby sort comparator path through jv_cmp() in src/jv_aux.c overflows the stack at a larger nesting depth from the same missing recursion guard. Anyone running jq comparisons on attacker-controlled deeply nested JSON values, or embedding jq in a context where untrusted data can reach the == comparison path, is affected. This vulnerability is fixed in 1.8.2.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

未经控制的递归

jqlang jq 资源管理错误漏洞

jqlang jq是jqlang团队开源的一个轻量级且灵活的命令行 JSON 处理器。 jqlang jq 1.8.2之前版本存在资源管理错误漏洞，该漏洞源于使用==运算符比较深度嵌套数组时缺乏递归保护，导致C栈耗尽，容易受到拒绝服务攻击。

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