CVE-2026-47750
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk4th percentile - higher than 4% of all known CVEs
Summary
The stable-diffusion.cpp library has a heap buffer overflow vulnerability in the GLOBAL opcode handler in the .ckpt parser, which can lead to memory corruption. This issue affects versions prior to master-584-0a7ae07 and is caused by missing validation when searching for newline-delimited fields.
Risk Assessment
An attacker could exploit this vulnerability by forcing a victim to load a malicious .ckpt file from an untrusted source, potentially leading to serious security issues in the application.
Recommendation
It is recommended to update to version master-584-0a7ae07 or avoid loading .ckpt files from untrusted sources. Trusted model sources and safer formats such as .safetensors should be preferred.
Other vulnerabilities in stable-diffusion.cpp
See all- CVE-2026-47747High
The stable-diffusion.cpp library has a heap buffer overflow vulnerability in the BINUNICODE opcode handler in the .ckpt parser, which can lead to memory corruption. This issue affects versions prior to master-584-0a7ae07.
- CVE-2026-47749High
The stable-diffusion.cpp library has a heap buffer overflow vulnerability in the SHORT_BINUNICODE handler when parsing PyTorch checkpoint files. Versions prior to master-584-0a7ae07 are susceptible to attacks that may lead to heap corruption and potential code execution.
- CVE-2026-47748Medium
The stable-diffusion.cpp library, used for running diffusion models, has a vulnerability to an out-of-bounds read error in versions prior to master-584-0a7ae07. This issue arises from improper length checks during .ckpt file parsing, which can lead to reads past the end of the metadata buffer.
Original NVD description (English source)
stable-diffusion.cpp is a pure C/C++ library for running diffusion model (Stable Diffusion, Flux, Wan, Qwen Image, Z-Image, and more) inference. In versions prior to master-584-0a7ae07, the pickle .ckpt parser in src/model.cpp contained a heap buffer overflow vulnerability in the GLOBAL opcode handler. The issue was caused by missing validation when searching for newline-delimited fields. A crafted .ckpt file without the expected newline could cause the parser to use -1 as a copy length, resulting in immediate heap corruption. The attack requires the victim or application to load a .ckpt file from an untrusted source, such as a downloaded model from a model sharing site. The issue has been resolved in version master-584-0a7ae07. If developers are unable to immediately update their applications they can work around this issue by following these instructions: do not load .ckpt checkpoint files from untrusted sources, and prefer trusted model sources and safer formats such as .safetensors where possible.