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CVE-2026-41256

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2ca5460ffb3f197e83f4c90e5acfe1300417ef29dc16af4bfe5a8706e0d6857a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"jq","vendor":"jqlang","versions":[{"status":"affected","version":"<= 1.8.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d7f084ffc4d67eaab51d0980e32f87be71ab0ac5af1de69292c4cdcfb95cc34e · sha256:47d5371abbe99e73… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d7f084ffc4d67eaab51d0980e32f87be71ab0ac5af1de69292c4cdcfb95cc34e · sha256:47d5371abbe99e73… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-158","description":"CWE-158: Improper Neutralization of Null Byte or NUL Character","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d7f084ffc4d67eaab51d0980e32f87be71ab0ac5af1de69292c4cdcfb95cc34e · sha256:47d5371abbe99e73… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d7f084ffc4d67eaab51d0980e32f87be71ab0ac5af1de69292c4cdcfb95cc34e · sha256:47d5371abbe99e73… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d7f084ffc4d67eaab51d0980e32f87be71ab0ac5af1de69292c4cdcfb95cc34e · sha256:47d5371abbe99e73… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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