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.
References
| Link | Resource |
|---|---|
| https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg | Exploit Vendor Advisory |
| https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg | Exploit Vendor Advisory |
Configurations
History
13 May 2026, 17:00
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:jqlang:jq:*:*:*:*:*:*:*:* | |
| First Time |
Jqlang jq
Jqlang |
|
| References | () https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg - Exploit, Vendor Advisory |
11 May 2026, 21:19
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg - |
11 May 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-11 18:16
Updated : 2026-05-13 17:00
NVD link : CVE-2026-41256
Mitre link : CVE-2026-41256
CVE.ORG link : CVE-2026-41256
JSON object : View
Products Affected
jqlang
- jq
CWE
CWE-158
Improper Neutralization of Null Byte or NUL Character
