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NVD / CVE Program· CNA GitHub_M

CVE-2026-43895: jq: Embedded NUL in jq import paths causes local redaction-policy bypass and preserves sensitive fields in published artifacts

Noroxi assessment

Priority: Monitor (action score 17/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: azl3 jq 1.7.1-5 on Azure Linux 3.0 1.7.1-6; azl3 jq 1.7.1-6 on Azure Linux 3.0 1.7.1-6.

Low priority for now. Upgrade to azl3 jq 1.7.1-5 on Azure Linux 3.0 1.7.1-6; azl3 jq 1.7.1-6 on Azure Linux 3.0 1.7.1-6 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

jq is a command-line JSON processor. In 1.8.1 and earlier, jq accepts embedded NUL bytes in import paths at the jq-language level, but later resolves those paths through C string operations during module and data-file lookup. This creates a mismatch between the logical import string that policy or audit code may validate and the on-disk path that jq actually opens.

MediumCVSS 4.4 · v3.1—No exploit Fix available
Published
May 11, 2026
Updated
Oct 26, 2026
EPSS
0.1% · 4th percentile

Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
4.4
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
jqlangjq

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • jqlang jqup to 1.8.1 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • jqlang jq

    • <= 1.8.1affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.22jqbefore 1.8.2-r01.8.2-r0
Debian:12jqbefore 1.6-2.1+deb12u21.6-2.1+deb12u2
Debian:13jqbefore 1.7.1-6+deb13u31.7.1-6+deb13u3
Debian:14jqbefore 1.8.1-61.8.1-6
openSUSE:Leap 16.0jqbefore 1.7.1-160000.5.11.7.1-160000.5.1
openSUSE:Tumbleweedjqbefore 1.8.1-3.11.8.1-3.1
Red Hat:hummingbird:1jqbefore 0:1.8.2-0.1.hum10:1.8.2-0.1.hum1
Red Hat:hummingbird:1jq-develbefore 0:1.8.2-0.1.hum10:1.8.2-0.1.hum1
SUSE:Linux Enterprise Micro 5.3jqbefore 1.7.1-150000.3.25.11.7.1-150000.3.25.1
SUSE:Linux Micro 6.0jqbefore 1.7.1-1.11.7.1-1.1
SUSE:Linux Micro 6.1jqbefore 1.7.1-slfo.1.1_5.11.7.1-slfo.1.1_5.1
SUSE:Linux Micro 6.2jqbefore 1.7.1-160000.5.11.7.1-160000.5.1

Same product

jqlang: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-53427decNumberCopy in decNumber.c in jq through 1.7.1 does not properly consider that NaN is interpreted as numeric, which has a resultant stack-
    32Monitor
  • CVE-2026-40164jq: Algorithmic complexity DoS via hardcoded MurmurHash3 seed
    30Monitor
  • CVE-2026-32316jq: Integer overflow in jvp_string_append() allows Heap-based Buffer Overflow
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-41257May 11, 2026 · jq: Signed-int overflow in `stack_reallocate` (jq VM stack)
    25Monitor
  • ← EarlierCVE-2026-43894May 11, 2026 · jq: Wild stack write via signed-integer overflow in decNumber D2U() macro
    22Monitor
  • Later →CVE-2026-43896May 11, 2026 · jq: Stack Overflow in Recursive Object Merge
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
azl3 jq 1.7.1-5 on Azure Linux 3.01.7.1-6 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 jq 1.7.1-6 on Azure Linux 3.01.7.1-6 · CBL-Mariner ReleasesMicrosoft (MSRC)
alpine:jq1.8.2-r0 · Alpine:v3.22Package registry (OSV)
debian:jq1.6-2.1+deb12u2 · Debian:12Package registry (OSV)
opensuse:jq1.8.1-3.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:jq0:1.8.2-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:jq-devel0:1.8.2-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
suse:jq1.7.1-160000.5.1 · SUSE:Linux Micro 6.2Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-3394827 days apartjq: Embedded-NUL Truncation in CLI JSON Input Path Causes Prefix-Only Validation of Malformed Input
    11Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

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