CVE-2026-56018

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{"affected": [{"affectedData": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "JavaScript-Minifier-XS", "product": "JavaScript::Minifier::XS", "programFiles": ["XS.xs"], "programRoutines": [{"name": "JsMinify"}], "repo": "https://github.com/bleargh45/JavaScript-Minifier-XS", "vendor": "GTERMARS", "versions": [{"lessThan": "0.16", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "JavaScript::Minifier::XS versions before 0.16 for Perl leak memory on every call to minify(), allowing unbounded memory growth.\n\nIn JsMinify (XS.xs) the cleanup frees only the NodeSet structures and never the per-token contents buffers allocated in JsSetNodeContents; JsDiscardNode unlinks nodes without freeing their contents. Each token's contents buffer is therefore leaked on every call, and the two early returns taken when the node list is empty leak the whole NodeSet.\n\nA long-lived process that minifies repeatedly, such as an asset pipeline or a server-side minifier endpoint, grows in memory without bound until it exhausts available memory and is killed, causing denial of service."}, {"lang": "es", "value": "Las versiones de javascript_disabled: :Minifier::XS anteriores a la 0.16 para Perl fugan memoria en cada llamada a minify(), permitiendo un crecimiento de memoria ilimitado.\n\nEn JsMinify (XS.xs) la limpieza libera solo las estructuras NodeSet y nunca los b\u00faferes de contenido por token asignados en JsSetNodeContents; JsDiscardNode desvincula nodos sin liberar su contenido. El b\u00fafer de contenido de cada token, por lo tanto, se fuga en cada llamada, y los dos retornos anticipados que se toman cuando la lista de nodos est\u00e1 vac\u00eda fugan todo el NodeSet.\n\nUn proceso de larga duraci\u00f3n que minimiza repetidamente, como una tuber\u00eda de activos o un punto final de minimizador del lado del servidor, crece en memoria sin l\u00edmites hasta que agota la memoria disponible y es terminado, causando denegaci\u00f3n de servicio."}], "id": "CVE-2026-56018", "lastModified": "2026-10-25T21:10:00.770", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-56018", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-29T20:52:50.642184Z", "version": "2.0.3"}}]}, "published": "2026-06-29T20:17:39.680", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://github.com/bleargh45/JavaScript-Minifier-XS/issues/10"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/GTERMARS/JavaScript-Minifier-XS-0.16/changes"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/06/29/17"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-401"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,0.16)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "JavaScript::Minifier::XS", "source": "cna", "vendor": "GTERMARS"}, "product": "javascript::minifier::xs", "vendor": "gtermars"}], "created": "2026-06-29T21:45:04.109072+00:00", "updated": "2026-07-01T10:03:41.152691+00:00", "vendors": ["gtermars", "gtermars$PRODUCT$javascript::minifier::xs"]}