CVE-2026-28231

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No special configuration is required \u2014 this triggers under default settings. Version 1.3.0 fixes the issue."}, {"lang": "es", "value": "pillow_heif es una librer\u00eda de Python para trabajar con im\u00e1genes HEIF y un plugin para Pillow. Antes de la versi\u00f3n 1.3.0, un desbordamiento de entero en la validaci\u00f3n del b\u00fafer de la ruta de codificaci\u00f3n de _pillow_heif.c permite a un atacante eludir las comprobaciones de l\u00edmites al proporcionar grandes dimensiones de imagen, lo que resulta en una lectura fuera de l\u00edmites del heap. Esto puede conducir a la revelaci\u00f3n de informaci\u00f3n (fuga de memoria del heap del servidor en las im\u00e1genes codificadas) o a la denegaci\u00f3n de servicio (ca\u00edda del proceso). No se requiere ninguna configuraci\u00f3n especial; esto se activa con la configuraci\u00f3n predeterminada. La versi\u00f3n 1.3.0 corrige el problema."}], "id": "CVE-2026-28231", "lastModified": "2026-06-17T10:28:22.607", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-28231", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-03T20:25:24.513947Z", "version": "2.0.3"}}]}, "published": "2026-02-27T20:21:40.697", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/bigcat88/pillow_heif/commit/8305a15d3780c533b762578cbe987d27a2c59c7a"}, {"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/bigcat88/pillow_heif/releases/tag/v1.3.0"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/bigcat88/pillow_heif/security/advisories/GHSA-5gjj-6r7v-ph3x"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-190"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.3.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "pillow_heif", "source": "cna", "vendor": "bigcat88"}, "product": "pillow_heif", "vendor": "bigcat88"}], "analysis": {"en": {"generated_at": "2026-04-17T13:55:55.542744+00:00", "value": {"mitigation_remediation": ["Update pillow_heif to version\u202f1.3.0 or later.", "Ensure all users and environments install the patched version of pillow_heif.", "If upgrade is not immediately possible, block or rigorously validate external HEIF images before processing."], "summary": {"action": "Patch now", "impact": "Information disclosure or denial of service via heap out-of-bounds read"}, "threat_synthesis": {"affected_systems": "Any deployment of the pillow_heif Python package before version 1.3.0 is affected. The package functions as a plugin for the Pillow image library and is commonly used in projects that process HEIF images. Versions earlier than 1.3.0 need to be patched. The pillow_heif Python package from bigcat88 is the affected component.", "description_and_impact": "The flaw is an integer overflow during buffer validation in the encode path of pillow_heif. An attacker can supply large image dimensions, causing bounds checks to be bypassed, which results in a heap out-of-bounds read. This can leak private information from process memory into encoded images or cause the process to crash, leading to information disclosure or denial of service.", "risk_and_exploitability": "The CVSS base score of 5.5 yields a medium severity, and the EPSS score of less than 1\u202f% indicates a very low probability of exploitation. The vulnerability is not present in CISA\u2019s KEV catalog. Exploitation requires an attacker to supply a crafted HEIF image with oversized dimensions to an application that imports pillow_heif under default settings. In web services or image processing pipelines that accept external files, the attack vector is remote; local users could also trigger the flaw by processing a malicious image."}}}}, "created": "2026-03-02T12:05:01.025836+00:00", "updated": "2026-04-17T14:00:15.811793+00:00", "vendors": ["bigcat88", "bigcat88$PRODUCT$pillow_heif"]}