CVE-2025-49014— jq heap use after free vulnerability in f_strflocaltime
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 1.8.0版本存在资源管理错误漏洞，该漏洞源于文件/src/builtin.c中的函数f_strflocaltime存在释放后重用问题。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-49014
Vulnerability Information
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Vulnerability Title
jq heap use after free vulnerability in f_strflocaltime
Source: CVE Program / CVE List V5
Vulnerability Description
jq is a command-line JSON processor. In version 1.8.0 a heap use after free vulnerability exists within the function f_strflocaltime of /src/builtin.c. This issue has been patched in commit 499c91b, no known fix version exists at time of publication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
jq 资源管理错误漏洞
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 1.8.0版本存在资源管理错误漏洞，该漏洞源于文件/src/builtin.c中的函数f_strflocaltime存在释放后重用问题。
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-2025-49014
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IV. Related Vulnerabilities
Same product: jq
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CVE-2026-47770
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CVE-2026-49839
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CVE-2026-43896
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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-416
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CVE-2026-105824
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V. Comments for CVE-2025-49014
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