CVE-2026-41257Disclosure(jqlang / jq)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch jqlang jq systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

jq is a command-line JSON processor. In 1.8.1 and earlier, the jq bytecode VM's data stack tracks its allocation size in a signed int. When the stack grows beyond ≈1 GiB (via deeply nested generator forks), the doubling arithmetic overflows. The wrapped value is passed to realloc and then used for a memmove with attacker-influenced offsets.

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0.5/ 10 priority

Sources & remediation

Exploit / PoC references

Weakness type (CWE)

CWE-190CWE-787

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

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

Threat summary

Patch or workaround signal is available
2 mentions across 2 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 1 signal
Disclosure: 1 classified signal
Peaked 1d ago at 1 mentions (2026-05-11); latest day: 1
2 total mentions across 2 days

Affected systems

Vendors

jqlang

Products

Deep dive

Activity timeline2 mentions / 2d

Signal classification2 categories

Disclosure

150.0%

Patch

150.0%

Referenced assets2 URLs

By indicator

Classification over time

Date	Total	Labels

2026-05-11	1	Disclosure1
2026-06-03	1	Patch1

Full discourse2 posts

WindowsForum@windowsforum127d
Patch
🪟 jq CVE-2026-41257 is “just Linux,” until your CI pipes start bleeding memory. Microsoft’s guide matters because Windows admins live in containers, scripts, and shared plumbing. Patch it. #Windows #Microsoft #Azure #Security https://windowsforum.com/threads/cve-2026-41257-jq-integer-overflow-azure-linux-patch-and-ci-inventory-guide.422024/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #SecurityUpdate #AzureLinux30 https://t.co/OqCbE5Vgli
Post summary
The post urges patching of CVE-2026-41257, referencing a Microsoft guide for Windows admins in containerized environments, without detailing the exploit or vulnerability type.
0000051
1.1K followersView on X
CVE@CVEnew150d
Disclosure
CVE-2026-41257 jq is a command-line JSON processor. In 1.8.1 and earlier, the jq bytecode VM's data stack tracks its allocation size in a signed int. When the stack grows beyond ≈1 … https://www.cve.org/CVERecord?id=CVE-2026-41257
Post summary
CVE-2026-41257 is disclosed as a signed integer stack overflow in jq 1.8.1 and earlier, with no PoC, exploit, mitigation, or active exploitation mentioned.
0000075
57.5K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	jqlang	jq	-	-	-

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