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CVE-2026-32836— mackron / dr_libs dr_flac.h Excessive Memory Allocation in PICTURE Metadata Parsing

Quick assessment

Affected
mackron dr_libs dr_flac.h
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

dr_libs是David Reid个人开发者的一个C/C++的音频解码库。 dr_libs 0.13.3及之前版本存在安全漏洞，该漏洞源于drflac__read_and_decode_metadata函数存在未受控内存分配，可能导致攻击者通过特制PICTURE元数据块触发过度内存分配，造成拒绝服务。

CVSS 6.2 · Medium EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 4

VendorProduct Version RangeStatus
mackron dr_libs dr_flac.h ≤ 0.13.3 affected
fefced4a64adfb1a68a2d31d882366e56096dee8 unaffected
4f5a4cd3b57564d969443c580c75857e039f100a unaffected
663239a3d0460c33bd5b6e5166edcb404e3df676 unaffected
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I. Basic Information for CVE-2026-32836

Vulnerability Information
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Vulnerability Title
mackron / dr_libs dr_flac.h Excessive Memory Allocation in PICTURE Metadata Parsing
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
dr_libs 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dr_libs是David Reid个人开发者的一个C/C++的音频解码库。 dr_libs 0.13.3及之前版本存在安全漏洞，该漏洞源于drflac__read_and_decode_metadata函数存在未受控内存分配，可能导致攻击者通过特制PICTURE元数据块触发过度内存分配，造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mackron dr_libs dr_flac.h 0 ~ 0.13.3 -

II. Public POCs for CVE-2026-32836

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III. Intelligence Information for CVE-2026-32836

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Patches & Fixes for CVE-2026-32836 (3)

Vendor Advisories for CVE-2026-32836 (1)

Other References for CVE-2026-32836 (1)

IV. Related Vulnerabilities

Same vendor: mackron
Same weakness: CWE-789