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vulnerabilityCVE-2026-41256
Name
CVE-2026-41256
Source
NVD ( link)Debian ( link)
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.
Published Date
Updated Date
Workaround
-

Analysis#


Affected Component
Analysis
jq
Patched

Vulnerability Ratings#


5.5
CVSSv31
NaN
other

Others affected components#


Name
Project
Project Version
Version
Status
buildroot
2025.02.x
1.7.1
Patched
buildroot
master
1.8.2
Not Affected
openwrt
master
1.8.2-r1
Not Affected
openwrt
openwrt-25.12
1.8.1-r2
Exploitable
yocto
kirkstone
1.6+gitX
Exploitable
yocto
master
1.8.2
Not Affected

Resolved with patches#


jq (buildroot:2025.02.x)

#
Title
Author
Resolve
1
Fix NUL truncation in program files loaded with -f
itchyny <itchyny@cybozu.co.jp>
CVE-2026-41256

jq (yocto:scarthgap)

#
Title
Author
Resolve
1
Fix NUL truncation in program files loaded with -f
itchyny <itchyny@cybozu.co.jp>
CVE-2026-41256