CVE-2026-43896: CWE-674: Uncontrolled Recursion in jqlang jq
CVE-2026-43896 is a medium severity vulnerability in jq versions 1.8.1 and earlier caused by uncontrolled recursion in the jv_object_merge_recursive() function. This occurs when using the * operator on two JSON objects, potentially causing a segmentation fault and crashing the jq process. The vulnerability impacts availability but does not affect confidentiality or integrity. No official patch or remediation is currently available. Users should monitor vendor advisories for updates and exercise caution when processing untrusted JSON with affected jq versions.
AI Analysis
Technical Summary
CVE-2026-43896 is a vulnerability in the jq JSON processor affecting versions 1.8.1 and earlier. It arises from uncontrolled recursion in the jv_object_merge_recursive() function triggered by the use of the * operator on two JSON objects. This flaw can cause a segmentation fault, leading to a denial of service by crashing the jq process. There is no indication that confidentiality or integrity is compromised. No official fix or remediation guidance has been provided by the vendor at this time.
Potential Impact
The vulnerability can cause jq to crash due to a segmentation fault, resulting in a denial of service and impacting availability. There is no evidence of confidentiality or integrity compromise.
Mitigation Recommendations
No official patch or remediation guidance is currently available from the vendor. Users should monitor vendor advisories for updates. Until a fix is released, exercise caution when processing untrusted JSON data with affected jq versions to avoid triggering the vulnerability.
CVE-2026-43896: CWE-674: Uncontrolled Recursion in jqlang jq
Description
CVE-2026-43896 is a medium severity vulnerability in jq versions 1.8.1 and earlier caused by uncontrolled recursion in the jv_object_merge_recursive() function. This occurs when using the * operator on two JSON objects, potentially causing a segmentation fault and crashing the jq process. The vulnerability impacts availability but does not affect confidentiality or integrity. No official patch or remediation is currently available. Users should monitor vendor advisories for updates and exercise caution when processing untrusted JSON with affected jq versions.
CVSS v3.1
Score 6.2medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43896 is a vulnerability in the jq JSON processor affecting versions 1.8.1 and earlier. It arises from uncontrolled recursion in the jv_object_merge_recursive() function triggered by the use of the * operator on two JSON objects. This flaw can cause a segmentation fault, leading to a denial of service by crashing the jq process. There is no indication that confidentiality or integrity is compromised. No official fix or remediation guidance has been provided by the vendor at this time.
Potential Impact
The vulnerability can cause jq to crash due to a segmentation fault, resulting in a denial of service and impacting availability. There is no evidence of confidentiality or integrity compromise.
Mitigation Recommendations
No official patch or remediation guidance is currently available from the vendor. Users should monitor vendor advisories for updates. Until a fix is released, exercise caution when processing untrusted JSON data with affected jq versions to avoid triggering the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-04T15:17:09.331Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a021aa7cbff5d8610430531
Added to database: 05/11/2026, 18:06:31 UTC
Last enriched: 07/02/2026, 23:39:20 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 107
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