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On the systems with default signed char and optimized table-lookup ctype functions - such as NetBSD - this can lead to accessing array with negative offset, which can trigger a denial of service."},{"lang":"es","value":"En las versiones de PHP 8.2.* anteriores a la 8.2.31, 8.3.* anteriores a la 8.3.31, 8.4.* anteriores a la 8.4.21, y 8.5.* anteriores a la 8.5.6, algunas funciones, incluyendo urldecode(), pasan signed char a funciones ctype (como isxdigit()). En los sistemas con signed char predeterminado y funciones ctype optimizadas por tabla de búsqueda - como NetBSD - esto puede llevar a acceder a un array con un desplazamiento negativo, lo que puede desencadenar una denegación de servicio."}],"affected":[{"source":"security@php.net","affectedData":[{"vendor":"PHP Group","product":"PHP","defaultStatus":"affected","platforms":["NetBSD"],"versions":[{"version":"8.2.*","lessThan":"8.2.31","versionType":"semver","status":"affected"},{"version":"8.3.*","lessThan":"8.3.31","versionType":"semver","status":"affected"},{"version":"8.4.*","lessThan":"8.4.21","versionType":"semver","status":"affected"},{"version":"8.5.*","lessThan":"8.5.6","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security@php.net","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber","baseScore":6.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"LOW","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"AMBER"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-11T13:05:55.470310Z","id":"CVE-2026-7258","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security@php.net","type":"Secondary","description":[{"lang":"en","value":"CWE-125"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:php:php:*:*:*:*:*:*:*:*","versionStartIncluding":"8.2.0","versionEndExcluding":"8.2.21","matchCriteriaId":"63280F16-DE85-411A-BFFF-FB631AC43E09"},{"vulnerable":true,"criteria":"cpe:2.3:a:php:php:*:*:*:*:*:*:*:*","versionStartIncluding":"8.3.0","versionEndExcluding":"8.3.31","matchCriteriaId":"9DBBB51D-F0C4-4CEC-9B6B-33D0BF0044A5"},{"vulnerable":true,"criteria":"cpe:2.3:a:php:php:*:*:*:*:*:*:*:*","versionStartIncluding":"8.4.0","versionEndExcluding":"8.4.21","matchCriteriaId":"BA663C03-392C-41CC-BD11-4A1245203C42"},{"vulnerable":true,"criteria":"cpe:2.3:a:php:php:*:*:*:*:*:*:*:*","versionStartIncluding":"8.5.0","versionEndExcluding":"8.5.6","matchCriteriaId":"6101DA12-5AA1-4882-A52A-61FB74254F9A"}]}]}],"references":[{"url":"https://github.com/php/php-src/security/advisories/GHSA-m8rr-4c36-8gq4","source":"security@php.net","tags":["Vendor Advisory"]}]}}]}