Vulnerability · Published May 11, 2026 · Assigned by GitHub_M
CVE-2026-43895jq: Embedded NUL in jq import paths causes local redaction-policy bypass and preserves sensitive fields in published artifacts
Medium 4.4
In plain English
A medium-severity improper input validation in jq from jqlang. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.22 | jq | 1.8.2-r0 | ALPINE-CVE-2026-43895 |
| Alpine:v3.23 | jq | 1.8.2-r0 | ALPINE-CVE-2026-43895 |
| Alpine:v3.24 | jq | 1.8.2-r0 | ALPINE-CVE-2026-43895 |
| Debian:12 | jq | 1.6-2.1+deb12u2 | DEBIAN-CVE-2026-43895 |
| Debian:13 | jq | 1.7.1-6+deb13u3 | DEBIAN-CVE-2026-43895 |
| Debian:14 | jq | 1.8.1-6 | DEBIAN-CVE-2026-43895 |
| Ubuntu:22.04:LTS | jq | no fix listed | UBUNTU-CVE-2026-43895 |
| Ubuntu:24.04:LTS | jq | no fix listed | UBUNTU-CVE-2026-43895 |
| Ubuntu:25.10 | jq | no fix listed | UBUNTU-CVE-2026-43895 |
| Ubuntu:26.04:LTS | jq | no fix listed | UBUNTU-CVE-2026-43895 |
| Ubuntu:26.10 | jq | no fix listed | UBUNTU-CVE-2026-43895 |
Affected products (as reported)
Weakness: CWE-20, CWE-158 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
References
- https://github.com/jqlang/jq/security/advisories/GHSA-7q7g-mrq3-phxr x_refsource_CONFIRM