Vulnerability · Published Nov 5, 2026 · Assigned by GitHub_M
CVE-2026-70660stable-diffusion.cpp: Out-of-bounds read in safetensors loader: unvalidated data_offsets allow a tensor's byte range to extend past the end of the file
Medium 6.9
In plain English
A medium-severity out-of-bounds read in stable-diffusion.cpp from leejet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Official description
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/model_io/safetensors_io.cpp trusts each tensor's data_offsets 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/model_loader.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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| leejet | stable-diffusion.cpp | < master-764-e22272e |
Weakness: CWE-125 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
References
- https://github.com/leejet/stable-diffusion.cpp/security/advisories/GHSA-v2m4-h57v-fr6w x_refsource_CONFIRM
- https://github.com/leejet/stable-diffusion.cpp/pull/1754 x_refsource_MISC
- https://github.com/leejet/stable-diffusion.cpp/commit/e22272ee631b742dab4440c18eb8fcafb0689402 x_refsource_MISC
- https://github.com/leejet/stable-diffusion.cpp/releases/tag/master-764-e22272e x_refsource_MISC