Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-43895— jq: Embedded NUL in jq import paths causes local redaction-policy bypass and preserves sensitive fields in published artifacts

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 1.8.1及之前版本存在输入验证错误漏洞，该漏洞源于jq在jq语言级别接受嵌入的NUL字节在导入路径中，但随后在模块和数据文件查找期间通过C字符串操作解析这些路径，导致逻辑导入字符串与jq实际打开的磁盘路径之间存在不匹配。

CVSS 4.4 · Medium EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 1

VendorProduct Version RangeStatus
jqlang jq <= 1.8.1 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-43895

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
jq: Embedded NUL in jq import paths causes local redaction-policy bypass and preserves sensitive fields in published artifacts
Source: CVE Program / CVE List V5
Vulnerability Description
jq is a command-line JSON processor. In 1.8.1 and earlier, jq accepts embedded NUL bytes in import paths at the jq-language level, but later resolves those paths through C string operations during module and data-file lookup. This creates a mismatch between the logical import string that policy or audit code may validate and the on-disk path that jq actually opens.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
jq 输入验证错误漏洞
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 1.8.1及之前版本存在输入验证错误漏洞，该漏洞源于jq在jq语言级别接受嵌入的NUL字节在导入路径中，但随后在模块和数据文件查找期间通过C字符串操作解析这些路径，导致逻辑导入字符串与jq实际打开的磁盘路径之间存在不匹配。
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

Vendor Product Affected Versions CPE Subscribe
jqlang jq <= 1.8.1 -

II. Public POCs for CVE-2026-43895

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-43895

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-43895 (1)

Same Patch Batch · jqlang · 2026-05-11 · 7 CVEs total

CVE-2026-43896 6.2 MEDIUM jq: Stack Overflow in Recursive Object Merge
CVE-2026-43894 6.2 MEDIUM jq: Wild stack write via signed-integer overflow in decNumber D2U() macro
CVE-2026-41256 5.5 MEDIUM jq: Embedded NUL truncates top-level jq programs loaded with -f
CVE-2026-41257 jq: Signed-int overflow in `stack_reallocate` (jq VM stack)
CVE-2026-40612 jq: Stack overflow via unbounded recursion in jv_contains
CVE-2026-44777 jq: stack overflow in module loading on mutual `include`

IV. Related Vulnerabilities

Same product: jq
Same vendor: jqlang
Same weakness: CWE-20

V. Comments for CVE-2026-43895

No comments yet

Leave a comment