# CVE-2026-11315: dr_libs dr_mp3 out-of-bounds read in frame parsing

Source: https://junglewise.ai/threats/cve-2026-11315-a-out-of-bounds-read-vulnerability-exists-in-the-dr-mp3-drmp3  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-11315 · Severity: medium · CVSS 4.3 · Published 2026-11-10

dr_libs is a popular single-file audio decoding library used in games and media applications. A malicious MP3 file can trigger an out-of-bounds read in the dr_mp3 decoder during frame initialization, potentially allowing an attacker to read memory beyond the allocated buffer. This could expose sensitive data from memory when an application processes a specially crafted audio file.

Technologies: [Mackron Dr Libs](https://junglewise.ai/threats/technologies/dr-libs). Vendors: [Mackron](https://junglewise.ai/threats/vendors/mackron).

## Quick answers

**Is CVE-2026-11315 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-11315 being exploited in the wild.

**How severe is CVE-2026-11315?** Medium severity, with a CVSS score of 4.3, published 10 November 2026.

**Which products and versions are affected?** Mackron Dr Libs 0.7.3.

**Is there a fix for CVE-2026-11315?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-11315 attacked?** It is attacked over the network or with local access, in a software library.

**Am I affected by CVE-2026-11315?** Check whether you run Mackron Dr Libs at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An out-of-bounds read vulnerability exists in drmp3_init_internal when parsing MPEG frame side information. A truncated MP3 frame causes the bitstream parser to advance past the allocated frame buffer, allowing subsequent reads of the Xing/Info tag identifier to access memory outside the heap-allocated region. The vulnerability is triggered via a malicious MP3 file processed without user interaction restrictions, requiring only network/local file delivery.

## Affected products

- mackron dr_libs 0.7.3

## Timeline

- 2026-11-10: disclosed

## References

- [https://talosintelligence.com/vulnerability_reports/TALOS-2026-2441](https://talosintelligence.com/vulnerability_reports/TALOS-2026-2441)

## Related threats

- [dr_libs dr_wav out-of-bounds write in cue metadata parsing](https://junglewise.ai/threats/cve-2026-11316-a-out-of-bounds-write-vulnerability-exists-in-the-dr-wav-drwav)
- [mackron dr_libs uncontrolled memory allocation in dr_flac.h](https://junglewise.ai/threats/cve-2026-32836-mackron-dr-libs-uncontrolled-memory-allocation-in-dr-flac-h)
- [dr_libs dr_wav.h heap buffer overflow in drwav__read_smpl_to_metadata_obj](https://junglewise.ai/threats/cve-2026-29022-dr-libs-dr-wav-h-heap-buffer-overflow-in-drwav-read-smpl-to)