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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-41256

24
FAUCET Score

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.

First published: May 11, 2026Last modified: May 11, 2026

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.8.1CPE matchmatch criteria
cpe:2.3:a:jqlang:jq:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.16%
Probability of exploitation in next 30 days
EPSS Percentile
5.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0016 is in the 7th percentile among its peer group of 5,758 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

microsoftpatch availablevia msrc
Product: 21297-17084Fixed in: 1.7.1-6
microsoftpatch availablevia msrc
Product: 21415-17084Fixed in: 1.7.1-6
microsoftpatch availablevia msrc
Product: azl3 jq 1.7.1-5 on Azure Linux 3.0Fixed in: 1.7.1-6
microsoftpatch availablevia msrc
Product: azl3 jq 1.7.1-6 on Azure Linux 3.0Fixed in: 1.7.1-6
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2026-May/CVE-2026-41256Moderate

jq: Embedded NUL truncates top-level jq programs loaded with -f

May 12, 2026

References

github.com / jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg
ExploitVendor Advisory