# CVE-2026-47770: jq: jq is a command-line JSON processor

CVE-2026-47770 is fixed in jq on 1 platform, first by DEBIAN-CVE-2026-47770, released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-47770
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0015
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 25, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | jq Debian 12.15 (bookworm) | 1.6-2.1+deb12u2 | [DEBIAN-CVE-2026-47770](https://patchblox.com/security/data/fix/linux/debian-cve-2026-47770.md) | Jun 24, 2026 |
| Linux | jq Debian 13.5 (trixie) | 1.7.1-6+deb13u3 | [DEBIAN-CVE-2026-47770](https://patchblox.com/security/data/fix/linux/debian-cve-2026-47770.md) | Jun 24, 2026 |
| Linux | jq Debian 14 | 1.8.1-7 | [DEBIAN-CVE-2026-47770](https://patchblox.com/security/data/fix/linux/debian-cve-2026-47770.md) | Jun 24, 2026 |
| Linux | jq opensuse-leap 16.0 | 1.7.1-160000.5.1 | [OPENSUSE-SU-2026:21833-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21833-1.md) | Sep 11, 2026 |
| Linux | jq sles 15.6 | 1.7.1-150000.3.25.1 | [SUSE-SU-2026:4275-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4275-1.md) | Sep 21, 2026 |
| Linux | jq sles 15.7 | 1.7.1-150000.3.25.1 | [SUSE-SU-2026:4275-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4275-1.md) | Sep 21, 2026 |
| Linux | jq sles 16.0 | 1.7.1-160000.5.1 | [SUSE-SU-2026:23728-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23728-1.md) | Sep 11, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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