CVE & CISA-KEV Catalog

CVE-2026-41256

MEDIUM
5.5
CVSS v3
NVD

Description

jq is a command-line JSON processor. In 1.8.1 and earlier, Top-level jq programs loaded from a file with -f are truncated at the first embedded NUL byte on current upstream HEAD. A crafted filter file such as . followed by \x00 and arbitrary suffix compiles and executes as only the prefix before the NUL. This leaves jq with a post-CVE-2026-33948 prefix/full-buffer mismatch on the compilation path even though the JSON parser path has already been fixed.

CWE-158

How to fix

Remediation Available
jqDebian
Fixed in:1.6-2.1+deb11u2CVE-2026-41256
Fixed in:1.8.1-6CVE-2026-41256
jqRed Hat / RHEL
Fixed in:main@x86_64RHSA-2026:29986
Fixed in:main@aarch64RHSA-2026:29986
Fixed in:main@srcRHSA-2026:29986
jqRocky
Fixed in:main@aarch64RHSA-2026:29986
Fixed in:main@x86_64RHSA-2026:29986
Fixed in:main@srcRHSA-2026:29986

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Exploit Intelligence

0.16%probability of exploitation in 30 days
5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Exploit1
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CVE-2026-41256 severity badge

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.