CVE-2026-71261 dr_wav.h W64 CUE Chunk Metadata Parsing Integer Overflow Leading to Heap Buffer Overflow on 32-bit Builds
Integer overflow in dr_wav.h W64 CUE chunk parsing on 32-bit builds leads to heap buffer overflow, potentially allowing code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-71261?
CVE-2026-71261 is a high-severity vulnerability in mackron dr_libs, published on 5 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
dr_libs dr_wav.h (all versions through current master) contains an integer overflow in W64 CUE chunk metadata parsing. In drwav__metadata_process_chunk, a stage-1 capacity estimate truncates the 64-bit W64 chunk sizeInBytes to size_t before dividing by DRWAV_CUE_POINT_BYTES; on 32-bit builds this truncation causes the pre-allocated extra metadata capacity to be computed incorrectly.
Weakness: CWE-190
Which versions are affected by CVE-2026-71261?
How do I fix CVE-2026-71261?
No fix has been published for CVE-2026-71261 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-71261 being exploited?
There is no known exploitation of CVE-2026-71261 in the wild and no public exploit code.
Sources
Also known as GHSA-cfw7-vmp5-wg69, UBUNTU-CVE-2026-71261.