CVE-2026-43895 Vulnerability Analysis & Exploit Details

CVE-2026-43895
Vulnerability Scoring

4.4
/10
Medium Risk

The vulnerability CVE-2026-43895 could compromise system integrity but typically requires user interaction to be exploited.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2026-43895 Details

Status: Analyzed

Last updated: 🕔 13 May 2026, 17:02 UTC
Originally published on: 🕕 11 May 2026, 18:16 UTC

Time between publication and last update: 1 days

CVSS Release: version 3

CVSS3 Source

security-advisories@github.com

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2026-43895 Vulnerability Summary

CVE-2026-43895: 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.

Assessing the Risk of CVE-2026-43895

Access Complexity Graph

The exploitability of CVE-2026-43895 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-43895

CVE-2026-43895 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-43895, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-43895, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: Low
    CVE-2026-43895 could lead to minor leaks of non-critical information without major privacy breaches.
  • Integrity: Low
    Exploiting CVE-2026-43895 may cause minor changes to data without severely impacting its accuracy.
  • Availability: None
    CVE-2026-43895 does not impact system availability.

CVE-2026-43895 References

External References

CWE Common Weakness Enumeration

CWE-158

CAPEC Common Attack Pattern Enumeration and Classification

  • Embedding NULL Bytes CAPEC-52 An adversary embeds one or more null bytes in input to the target software. This attack relies on the usage of a null-valued byte as a string terminator in many environments. The goal is for certain components of the target software to stop processing the input when it encounters the null byte(s).
  • Postfix, Null Terminate, and Backslash CAPEC-53 If a string is passed through a filter of some kind, then a terminal NULL may not be valid. Using alternate representation of NULL allows an adversary to embed the NULL mid-string while postfixing the proper data so that the filter is avoided. One example is a filter that looks for a trailing slash character. If a string insertion is possible, but the slash must exist, an alternate encoding of NULL in mid-string may be used.

Vulnerable Configurations

  • cpe:2.3:a:jqlang:jq:1.0:*:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.1:*:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.2:*:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.3:*:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.3:*:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.4:*:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.4:*:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.5:-:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.5:-:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.5:rc1:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.5:rc1:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.5:rc2:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.5:rc2:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.6:-:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.6:-:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.6:rc1:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.6:rc1:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.6:rc2:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.6:rc2:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.7:*:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.7:*:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.7:-:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.7:-:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.7:rc1:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.7:rc1:*:*:*:*:*:*
  • cpe:2.3:a:jqlang:jq:1.7:rc2:*:*:*:*:*:*
    cpe:2.3:a:jqlang:jq:1.7:rc2:*:*:*:*:*:*

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