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CVE-2024-34359

Severity
CRITICAL
CVSS
9.7
EPSS
0.2842
Risk score
48.75
CISA KEV
No
PoC
No
Published
2024-05-10
Modified
2024-08-02
First seen
2026-08-08
Aliases
EUVD-2024-1433, GHSA-56XG-WFCC-G829, PYSEC-2026-392
Products
abetlen:llama-cpp-python 0.2.30, ≤ 0.2.71
Sources
euvd EUVD-2024-1433

Description

llama-cpp-python is the Python bindings for llama.cpp. `llama-cpp-python` depends on class `Llama` in `llama.py` to load `.gguf` llama.cpp or Latency Machine Learning Models. The `__init__` constructor built in the `Llama` takes several parameters to configure the loading and running of the model. Other than `NUMA, LoRa settings`, `loading tokenizers,` and `hardware settings`, `__init__` also loads the `chat template` from targeted `.gguf` 's Metadata and furtherly parses it to `llama_chat_format.Jinja2ChatFormatter.to_chat_handler()` to construct the `self.chat_handler` for this model. Nevertheless, `Jinja2ChatFormatter` parse the `chat template` within the Metadate with sandbox-less `jinja2.Environment`, which is furthermore rendered in `__call__` to construct the `prompt` of interaction. This allows `jinja2` Server Side Template Injection which leads to remote code execution by a carefully constructed payload.

References