CVE-2026-47309

Engine crash via deeply nested JSON arrays

Published May 19, 2026 · Updated May 19, 2026

Uncontrolled recursion in Escargot commit 590345cc6258317c5da850d846ce6baaf2afc2d3 allows local users to crash the engine. The JSON parser enters RapidJSON container handling for each nested array or object without checking Escargot's available stack depth. Processing attacker-supplied JavaScript that calls JSON.parse is required; native-stack exhaustion terminates only the affected engine process.

CVSS severity5.5
Medium
EPSS probability0.27%
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 Escargot commit 590345cc6258317c5da850d846ce6baaf2afc2d3 allows local users to crash the engine. The JSON parser enters RapidJSON container handling for each nested array or object without checking Escargot's available stack depth. Processing attacker-supplied JavaScript that calls JSON.parse is required; native-stack exhaustion terminates only the affected engine process.

The record

CVE
CVE-2026-47309
Published
May 19, 2026
Updated
May 19, 2026
Vendor
Samsung Electronics Co., Ltd.
Product
Escargot
Classifications
CWE-674, CAPEC-231, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 19, 2026CVE publishedPublication date reported by the CVE source.
  2. May 19, 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=590345cc6258317c5da850d846ce6baaf2afc2d3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Escargotversion=590345cc6258317c5da850d846ce6baaf2afc2d3

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5Samsung TV & ApplianceCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-674Uncontrolled Recursion
CAPEC-231Oversized Serialized Data Payloads
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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