CVE-2026-54679: CWE-190: Integer Overflow or Wraparound in jqlang jq
jq is a command-line JSON processor. Prior to 1.8.2, on 32bit system, jvp_string_append has a chance of integer/multiple overflowing and then causing a massive buffer overrun. This vulnerability is fixed in 1.8.2.
AI Analysis
Technical Summary
CVE-2026-54679 describes an integer overflow or wraparound vulnerability (CWE-190) in the jq tool's jvp_string_append function on 32-bit systems. This overflow can cause a buffer overrun, potentially leading to memory corruption. The vulnerability affects jq versions before 1.8.2 and has been addressed in version 1.8.2.
Potential Impact
The integer overflow can result in a massive buffer overrun, which may cause memory corruption or crashes. The CVSS 4.0 base score is 6.9 (medium severity), indicating a significant impact on affected systems without requiring user interaction or privileges.
Mitigation Recommendations
Upgrade jq to version 1.8.2 or later, where this vulnerability is fixed. No other mitigation is indicated or required.
CVE-2026-54679: CWE-190: Integer Overflow or Wraparound in jqlang jq
Description
jq is a command-line JSON processor. Prior to 1.8.2, on 32bit system, jvp_string_append has a chance of integer/multiple overflowing and then causing a massive buffer overrun. This vulnerability is fixed in 1.8.2.
CVSS v4.0
Score 6.9medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-54679 describes an integer overflow or wraparound vulnerability (CWE-190) in the jq tool's jvp_string_append function on 32-bit systems. This overflow can cause a buffer overrun, potentially leading to memory corruption. The vulnerability affects jq versions before 1.8.2 and has been addressed in version 1.8.2.
Potential Impact
The integer overflow can result in a massive buffer overrun, which may cause memory corruption or crashes. The CVSS 4.0 base score is 6.9 (medium severity), indicating a significant impact on affected systems without requiring user interaction or privileges.
Mitigation Recommendations
Upgrade jq to version 1.8.2 or later, where this vulnerability is fixed. No other mitigation is indicated or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-15T22:53:58.561Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3d65db4853345fc13feb09
Added to database: 06/25/2026, 17:31:07 UTC
Last enriched: 06/25/2026, 17:45:58 UTC
Last updated: 06/25/2026, 18:31:23 UTC
Views: 4
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