CVE-2026-50012

{"id": "CVE-2026-50012", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50012", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-17T14:04:19.455063Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 1.2}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 1.2}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "squid-cache", "product": "squid", "versions": [{"status": "affected", "version": "< 7.6"}]}]}], "published": "2026-07-16T17:16:57.493", "references": [{"url": "https://github.com/squid-cache/squid/commit/19fcfe922717c8b255270c032dcde4071c003bcd", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/squid-cache/squid/pull/2423", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/squid-cache/squid/releases/tag/SQUID_7_6", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-5vmx-9x64-9284", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-122"}]}], "descriptions": [{"lang": "en", "value": "Squid is a caching proxy for the Web. Prior to 7.6, due to an improper input validation bug in cache digest reply handling (peerDigestSwapInMask in src/peer_digest.cc), Squid is vulnerable to a heap-based buffer overflow: a cache digest's on-the-wire size may be larger than the mask_size declared within the digest, so a trusted peer sending a maliciously crafted reply to a cache_digest request message can trigger the overflow. This attack is limited to Squid instances compiled with the --enable-cache-digests option and configured with cache_peer entries. This issue is fixed in version 7.6."}, {"lang": "es", "value": "Squid es un proxy de almacenamiento en cach\u00e9 para la Web. Antes de la versi\u00f3n 7.6, debido a un error de validaci\u00f3n de entrada inadecuada en el manejo de respuestas de res\u00famenes de cach\u00e9 (peerDigestSwapInMask en src/peer_digest.cc), Squid es vulnerable a un desbordamiento de b\u00fafer basado en mont\u00edculo: el tama\u00f1o en tr\u00e1nsito de un resumen de cach\u00e9 puede ser mayor que el mask_size declarado dentro del resumen, por lo que un par de confianza que env\u00ede una respuesta maliciosamente elaborada a un mensaje de solicitud de cache_digest puede desencadenar el desbordamiento. Este ataque se limita a las instancias de Squid compiladas con la opci\u00f3n --enable-cache-digests y configuradas con entradas cache_peer. Este problema est\u00e1 solucionado en la versi\u00f3n 7.6."}], "lastModified": "2026-10-24T20:10:00.137", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D1EAA421-658A-4C10-A77B-EA9D38A3EFB8", "versionEndExcluding": "7.6"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}