CVE-2026-34043

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{"bugzilla": {"description": "serialize-javascript: serialize-javascript: Denial of Service via specially crafted array-like object serialization", "id": "2453284", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453284"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-835", "details": ["Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted \"array-like\" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.", "A flaw was found in serialize-javascript. An attacker can exploit this vulnerability by providing a specially crafted \"array-like\" object with an excessively large length property during the serialization process. This action causes the application to enter an intensive loop, leading to 100% CPU consumption and an indefinite hang. The primary consequence is a Denial of Service (DoS), making the affected system unresponsive."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-34043", "package_state": [{"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Fix deferred", "package_name": "cryostat-openshift-console-plugin-npm", "product_name": "Cryostat 4"}, {"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Fix deferred", "package_name": "serialize-javascript", "product_name": "Cryostat 4"}, {"cpe": "cpe:/a:redhat:gatekeeper:3", "fix_state": "Fix deferred", "package_name": "gatekeeper/gatekeeper-rhel9", "product_name": "Gatekeeper 3"}, {"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Fix deferred", "package_name": "openshift-logging/elasticsearch6-rhel9", "product_name": 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"openshift-gitops-1/argocd-rhel9", "product_name": "Red Hat OpenShift GitOps"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Fix deferred", "package_name": "container-native-virtualization/kubevirt-console-plugin-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_bpms_platform:7", "fix_state": "Fix deferred", "package_name": "serialize-javascript", "product_name": "Red Hat Process Automation 7"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Fix deferred", "package_name": "quay/quay-rhel8", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "nodejs-compression-webpack-plugin", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "nodejs-webpack", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "serialize-javascript", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:amq_streams:2", "fix_state": "Fix deferred", "package_name": "serialize-javascript", "product_name": "streams for Apache Kafka 2"}, {"cpe": "cpe:/a:redhat:amq_streams:3", "fix_state": "Fix deferred", "package_name": "serialize-javascript", "product_name": "streams for Apache Kafka 3"}], "public_date": "2026-03-31T01:48:45Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-34043\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-34043\nhttps://github.com/yahoo/serialize-javascript/commit/f147e90269b58bb6e539cfdf3d0e20d6ad14204b\nhttps://github.com/yahoo/serialize-javascript/releases/tag/v7.0.5\nhttps://github.com/yahoo/serialize-javascript/security/advisories/GHSA-qj8w-gfj5-8c6v"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.0.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "product": "serialize-javascript", "vendor": "yahoo"}], "analysis": {"en": {"generated_at": "2026-04-03T20:51:52.194563+00:00", "value": {"mitigation_remediation": ["Upgrade serialize-javascript to version\u202f7.0.5 or newer"], "summary": {"action": "Patch", "impact": "Denial of Service via CPU exhaustion caused by serialization of crafted array\u2011like objects"}, "threat_synthesis": {"affected_systems": "Applications using Yahoo\u2019s serialize-javascript library prior to the 7.0.5 release are affected. Any deployment that serializes untrusted input with this older version\u2014whether web services, command\u2011line tools, or embedded scripts\u2014may experience the denial of service.", "description_and_impact": "Serializing a specially crafted object that inherits the Array prototype and has a very large length property triggers an intensive loop in the serialize-javascript library, causing the process to consume 100\u202f% of CPU and hang indefinitely. The flaw is a resource exhaustion vulnerability where the library does not properly validate the array length during serialization, leading to unbounded CPU use.", "risk_and_exploitability": "With a CVSS score of 5.9, the severity is considered medium, while an EPSS score of less than 1\u202f% indicates a low likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog. The attack requires an attacker to supply a crafted array\u2011like object to the serialize function; the specific input channel depends on how the application exposes this functionality, so the vector is inferred rather than explicitly documented."}}}}, "created": "2026-03-31T19:56:25.865256+00:00", "updated": "2026-04-03T21:17:45.887017+00:00", "vendors": ["yahoo", "yahoo$PRODUCT$serialize-javascript"]}