Heap-based Buffer Overflow Affecting leejet/stable-diffusion.cpp package, versions [,master-584-0a7ae07)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-UNMANAGED-LEEJETSTABLEDIFFUSIONCPP-17660922
- published28 Jun 2026
- disclosed16 Jun 2026
- creditUnknown
Introduced: 16 Jun 2026
CVE-2026-47747 (opens in a new tab)How to fix?
Upgrade leejet/stable-diffusion.cpp to version master-584-0a7ae07 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow via the BINUNICODE opcode handler in the pickle .ckpt parser due to sign confusion on the opcode length field. An attacker can achieve heap corruption and potentially execute arbitrary code or cause a crash by supplying a crafted .ckpt file containing a negative signed value that leads to an excessively large length in a memcpy operation.
Workaround
This vulnerability can be mitigated by only loading .ckpt checkpoint files from trusted sources and preferring trusted model sources and safer formats such as .safetensors.