# CVE-2026-86515: vgmstream resource consumption in txtp parser

Source: https://junglewise.ai/threats/cve-2026-86515-vgmstream-resource-consumption-in-txtp-parser  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-86515 · Severity: medium · CVSS 4.3 · Published 2026-09-08

vgmstream is a library used to playback audio formats from video games. An attacker can craft a malicious txtp (playlist-like) file that manipulates the range_start and range_end arguments to consume excessive system resources, potentially causing a denial of service.

Technologies: [Vgmstream](https://junglewise.ai/threats/technologies/vgmstream). Vendors: [Vgmstream](https://junglewise.ai/threats/vendors/vgmstream).

## Quick answers

**Is CVE-2026-86515 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-86515 being exploited in the wild.

**How severe is CVE-2026-86515?** Medium severity, with a CVSS score of 4.3, published 8 September 2026.

**Which products and versions are affected?** Vgmstream up to r2117.

**Is there a fix for CVE-2026-86515?** A patch was published on 2026-09-08: Patch commit 4b6a02dd1aff6428255db912563d77d4cb0a143e Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-86515 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-86515?** Check whether you run Vgmstream 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

The vulnerability exists in the add_entry function of src/meta/txtp_parser.c in vgmstream up to revision r2117. Improper validation of the range_start and range_end arguments allows an attacker to trigger uncontrolled resource consumption. The attack vector is remote—a victim can be exploited by opening a malicious .txtp file. The vulnerability has been publicly disclosed and a patch is available (commit 4b6a02dd1aff6428255db912563d77d4cb0a143e). No authentication or special privileges are required to trigger the issue.

## Affected products

- vgmstream vgmstream up to r2117

## Timeline

- 2026-09-08: disclosed
- 2026-09-08: patched: Patch commit 4b6a02dd1aff6428255db912563d77d4cb0a143e

## References

- [https://github.com/vgmstream/vgmstream/](https://github.com/vgmstream/vgmstream/)
- [https://github.com/vgmstream/vgmstream/commit/4b6a02dd1aff6428255db912563d77d4cb0a143e](https://github.com/vgmstream/vgmstream/commit/4b6a02dd1aff6428255db912563d77d4cb0a143e)

## Related threats

- [vgmstream out-of-bounds read in VAG file handler](https://junglewise.ai/threats/cve-2026-105251-a-vulnerability-was-detected-in-vgmstream-up-to-r2117-affected)
- [vgmstream divide by zero in Microsoft IMA decoder](https://junglewise.ai/threats/cve-2026-105250-a-security-vulnerability-has-been-detected-in-vgmstream-up-to)
- [vgmstream use-after-free in TXTP file handler](https://junglewise.ai/threats/cve-2026-105249-a-weakness-has-been-identified-in-vgmstream-up-to-r2117-this)
- [vgmstream out-of-bounds write in TXTP file handler](https://junglewise.ai/threats/cve-2026-105248-a-security-flaw-has-been-discovered-in-vgmstream-up-to-r2117)
- [vgmstream divide-by-zero in AWB parser](https://junglewise.ai/threats/cve-2026-92881-vgmstream-divide-by-zero-in-awb-parser)