CVE-2026-43896Disclosure(jqlang / jq)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

jq is a command-line JSON processor. In 1.8.1 and earlier, unbounded recursion in jv_object_merge_recursive() allows a crafted jq program to crash the process with a segfault. The function is reachable through the * operator when both operands are objects.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-674

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • jq

Threat summary

  • 3 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked 2d ago at 1 mentions (2026-05-06); latest day: 1
  • 3 total mentions across 3 days

Affected systems

Vendors
Products
jq

Deep dive

Activity timeline3 mentions / 3d
00111Mentions · 2026-05-06: 1Mentions · 2026-05-11: 1Mentions · 2026-06-03: 1Technical Details · 2026-05-11: 1Technical Details · 2026-06-03: 105-0605-1106-03
Signal classification2 categories
Disclosure
266.7%
General
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-05-061
General1
2026-05-111
Disclosure1
2026-06-031
Disclosure1
Full discourse3 posts
  • Nullbyte@NullByte0x
    General

    I made a blog, I will be writing there about RE, Malware, VR. For the first post, I wrote a short breakdown of a recent bug I found in jq: CVE-2026-43896. Hope you enjoy it ; ) https://nullbyte0x.github.io/#/post/research/jq-object-merge-stack-overflow

    Post summary

    A blog author announces they discovered CVE-2026-43896 in jq and intends to write a short breakdown; no PoC, exploit, patch, or detailed technical information is provided.

    100121710
    8.7K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-43896 jq is a command-line JSON processor. In 1.8.1 and earlier, unbounded recursion in jv_object_merge_recursive() allows a crafted jq program to crash the process with a … https://www.cve.org/CVERecord?id=CVE-2026-43896

    Post summary

    The statement discloses an unbounded recursion flaw in jq 1.8.1 and earlier that can crash processes with crafted programs, providing technical details but no exploit, patch, or exploitation confirmation.

    0001071
    57.5K followersView on X
  • WindowsForum@windowsforum
    Disclosure

    🪟 jq DoS CVE-2026-43896 is the kind of bug that wrecks “glue code” everywhere—CI, containers, pipelines. Not sexy, but it’ll take down your Windows build faster than a bad script rewrite. https://windowsforum.com/threads/cve-2026-43896-in-jq-recursive-merge-dos-and-why-it-hits-windows-ops.422013/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #WindowsSecurity #DenialOfService #JqVulnerability #CiPipeline https://t.co/Z7aBH4tEX8

    Post summary

    A new DoS vulnerability (CVE‑2026‑43896) affecting jq's recursive merge has been disclosed, potentially causing disruptions in Windows CI and build pipelines.

    0000030
    1.1K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appjqlangjq---

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