CVE-2026-32836

mackron / dr_libs dr_flac.h Excessive Memory Allocation in PICTURE Metadata Parsing

MEDIUM
6.2
CVSS Score
Published: March 17, 2026 at 07:10 PM UTC
Updated: July 28, 2026 at 02:34 AM UTC
1 product affected across 1 vendorDr Libs

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Severity
MEDIUM6.2
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

dr_libs version 0.13.3 and earlier 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 0.13.3
Vendor states this is fixed in 4f5a4cd3b57564d969443c580c75857e039f100a (unaffected)
Vendor states this is fixed in 663239a3d0460c33bd5b6e5166edcb404e3df676 (unaffected)
Vendor states this is fixed in fefced4a64adfb1a68a2d31d882366e56096dee8 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.2MEDIUMVulnCheck
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-789

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