CVE-2023-50246— jq has heap-buffer-overflow vulnerability in the function decToString in decNumber.c
Quick assessment
Affected
jqlang jq
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
jq是jqlang开源的一个轻量级且灵活的命令行 JSON 处理器。 jq 1.7版本存在安全漏洞，该漏洞源于decNumber.c 中的函数 decToString 容易受到基于堆的缓冲区溢出的影响。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2023-50246
Vulnerability Information
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Vulnerability Title
jq has heap-buffer-overflow vulnerability in the function decToString in decNumber.c
Source: CVE Program / CVE List V5
Vulnerability Description
jq is a command-line JSON processor. Version 1.7 is vulnerable to heap-based buffer overflow. Version 1.7.1 contains a patch for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
jq 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
jq是jqlang开源的一个轻量级且灵活的命令行 JSON 处理器。 jq 1.7版本存在安全漏洞，该漏洞源于decNumber.c 中的函数 decToString 容易受到基于堆的缓冲区溢出的影响。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-50246
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2023-50246 (1)
Vendor Advisories for CVE-2023-50246 (1)
-
https://github.com/jqlang/jq/security/advisories/GHSA-686w-5m7m-54vc x_refsource_CONFIRM
Mailing List Discussions for CVE-2023-50246 (1)
Other References for CVE-2023-50246 (1)
-
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=64574 x_refsource_MISC
IV. Related Vulnerabilities
Same product: jq
-
CVE-2026-47770
jq: stack overflow in deep structural equality -
CVE-2026-49839
jq --rawfile invalid-state reuse after String too long cause -
CVE-2026-54679
jq: potential integer overflow in jvp_string_append -
CVE-2026-43896
jq: Stack Overflow in Recursive Object Merge -
CVE-2026-43895
jq: Embedded NUL in jq import paths causes local redaction-p
Same vendor: jqlang
-
CVE-2026-47770
jq: stack overflow in deep structural equality -
CVE-2026-49839
jq --rawfile invalid-state reuse after String too long cause -
CVE-2026-54679
jq: potential integer overflow in jvp_string_append -
CVE-2026-43896
jq: Stack Overflow in Recursive Object Merge -
CVE-2026-43895
jq: Embedded NUL in jq import paths causes local redaction-p
Same weakness: CWE-122
V. Comments for CVE-2023-50246
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