CVE-2026-33947Public exploit

Process crash via unbounded path recursion

Published Apr 13, 2026 · Updated Apr 13, 2026

Uncontrolled recursion in jqlang jq 1.8.1 and earlier allows attackers to crash the process via a caller-supplied path array. The jv_setpath(), jv_getpath(), and delpaths_sorted() routines recurse once per array element without enforcing a runtime path-depth limit, exhausting the C call stack. Exploitation requires a trusted filter or embedded libjq caller to pass attacker-influenced paths to an affected builtin, and the bounded impact is an unrecoverable process crash.

CVSS severity6.2
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in jqlang jq 1.8.1 and earlier allows attackers to crash the process via a caller-supplied path array. The jv_setpath(), jv_getpath(), and delpaths_sorted() routines recurse once per array element without enforcing a runtime path-depth limit, exhausting the C call stack. Exploitation requires a trusted filter or embedded libjq caller to pass attacker-influenced paths to an affected builtin, and the bounded impact is an unrecoverable process crash.

The record

CVE
CVE-2026-33947
Published
Apr 13, 2026
Updated
Apr 13, 2026
Vendor
jqlang
Product
jq
Classifications
CWE-674, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< fb59f1491058d58bdc3e8dd28f1773d1ac690a1f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

jqlang · jqversion=< fb59f1491058d58bdc3e8dd28f1773d1ac690a1f

Published CVSS scores

6.2GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-674Uncontrolled Recursion
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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