{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-32836", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-03-16T18:11:41.757Z", "datePublished": "2026-03-17T19:10:19.404Z", "dateUpdated": "2026-07-14T18:39:57.368Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-07-14T18:39:57.368Z" }, "title": "mackron / dr_libs dr_flac.h Excessive Memory Allocation in PICTURE Metadata Parsing", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-789", "description": "CWE-789 Memory allocation with excessive size value", "type": "CWE" } ] } ], "affected": [ { "vendor": "mackron", "product": "dr_libs dr_flac.h", "repo": "https://github.com/mackron/dr_libs/blob/master/dr_flac.h", "modules": [ "dr_flac.h" ], "versions": [ { "status": "affected", "version": "0", "lessThanOrEqual": "0.13.3", "versionType": "semver" }, { "status": "unaffected", "version": "fefced4a64adfb1a68a2d31d882366e56096dee8", "versionType": "git" }, { "status": "unaffected", "version": "4f5a4cd3b57564d969443c580c75857e039f100a", "versionType": "git" }, { "status": "unaffected", "version": "663239a3d0460c33bd5b6e5166edcb404e3df676", "versionType": "git" } ], "defaultStatus": "unknown", "packageURL": "pkg:github/mackron/dr_libs" } ], "descriptions": [ { "lang": "en", "value": "dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks." } ] } ], "references": [ { "url": "https://github.com/mackron/dr_libs/issues/298", "tags": [ "issue-tracking" ] }, { "url": "https://github.com/mackron/dr_libs/commit/fefced4a64adfb1a68a2d31d882366e56096dee8", "tags": [ "patch" ] }, { "url": "https://github.com/mackron/dr_libs/commit/4f5a4cd3b57564d969443c580c75857e039f100a", "tags": [ "patch" ] }, { "url": "https://github.com/mackron/dr_libs/commit/663239a3d0460c33bd5b6e5166edcb404e3df676", "tags": [ "patch" ] }, { "url": "https://www.vulncheck.com/advisories/mackron-dr-libs-excessive-memory-allocation-in-picture-metadata-parsing", "tags": [ "third-party-advisory" ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 6.9, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" } }, { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "MEDIUM", "baseScore": 6.2, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" } } ], "credits": [ { "lang": "en", "value": "Ana Kapulica", "type": "finder" } ], "source": { "discovery": "EXTERNAL" }, "x_generator": { "engine": "Vulnogram 1.0.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-03-18T14:06:01.362458Z", "id": "CVE-2026-32836", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-29T14:33:14.959Z" } } ] } }