{"id":"AZL-90273","summary":"CVE-2026-47770 affecting package jq for versions less than 1.7.1-8","details":"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.","modified":"2026-08-31T05:26:27Z","published":"2026-06-25T18:16:38Z","upstream":["CVE-2026-47770"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47770"}],"affected":[{"package":{"name":"jq","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/jq"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.1-8"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-90273.json"}}],"schema_version":"1.9.0"}