stable-diffusion.cpp is a pure C/C++ library for running diffusion model (Stable Diffusion, Flux, Wan, Qwen Image, Z-Image, and more)…
CVE-2026-70660
stable-diffusion.cpp is a pure C/C++ library for running diffusion model (Stable Diffusion, Flux, Wan, Qwen Image, Z-Image, and more) inference. Prior to master-764-e22272e, the safetensors loader in src/modelio/safetensorsio.cpp trusts each tensor's dataoffsets after checking only that nbytes equals end - begin. A crafted .safetensors file can declare a byte range beyond the file's data section, causing src/modelloader.cpp to consume an attacker-chosen length from an unchecked mapped-file offset. Loading the model can read adjacent process memory into tensor buffers or crash the process. This issue is fixed in master-764-e22272e.
Assessment
- CVSS
- 6.9 (v4.0)
- Severity
- Medium
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 5 November 2026
- Last updated
- 5 November 2026
- Affected
- leejet · stable-diffusion.cpp
- Assigner
- GitHub_M
CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
At the source
References
- https://github.com/leejet/stable-diffusion.cpp/security/advisories/GHSA-v2m4-h57v-fr6w
- https://github.com/leejet/stable-diffusion.cpp/pull/1754
- https://github.com/leejet/stable-diffusion.cpp/commit/e22272ee631b742dab4440c18eb8fcafb0689402
- https://github.com/leejet/stable-diffusion.cpp/releases/tag/master-764-e22272e
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