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Vulnerability record · CVE-2026-52132 · published 1 September 2026

CVE-2026-52132: Ggml llama.cpp vulnerability

Ggml · Llama.Cpp

llama.cpp through commit 97f06e9, when started with the --reranking flag, allows remote attackers to cause a denial of service (std::bad_alloc and HTTP 500) via a negative top_n value in a POST request to /rerank.

7.5 CVSS 3.1 High EPSS 0.59% · top 54.1% CWE-674 · CWE-674
7.5CVSS 3.1 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
4 Sep 2026Last modified by NVD

Description

llama.cpp through commit 97f06e9, when started with the --reranking flag, allows remote attackers to cause a denial of service (std::bad_alloc and HTTP 500) via a negative top_n value in a POST request to /rerank.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://blog.ph4nt0m.xyz/ko/cves/cve-2026-52132/ Third Party Advisory
https://github.com/ggml-org/llama.cpp Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-34159Ggml llama.cpp memory buffer overflow vulnerabilityllama.cpp is an inference of several LLM models in C/C++. Prior to version b8492, the RPC backend's deserialize_tensor() skips all bounds validation …EPSS 1.2%9.8CVE-2026-21869Ggml llama.cpp out-of-bounds write vulnerabilityllama.cpp is an inference of several LLM models in C/C++. In commits 55d4206c8 and prior, the n_discard parameter is parsed directly from JSON input …EPSS 0.52%9.8CVE-2024-42478Ggml llama.cpp out-of-bounds read vulnerabilityllama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause arbitrary address reading. This v…EPSS 0.60%9.8CVE-2024-42479Ggml llama.cpp out-of-bounds write vulnerabilityllama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause arbitrary address writing. This v…EPSS 2.6%9.8CVE-2024-23605Ggml llama.cpp integer overflow vulnerabilityA heap-based buffer overflow vulnerability exists in the GGUF library header.n_kv functionality of llama.cpp Commit 18c2e17. A specially crafted .ggu…EPSS 1.3%9.8CVE-2024-23496Ggml llama.cpp integer overflow vulnerabilityA heap-based buffer overflow vulnerability exists in the GGUF library gguf_fread_str functionality of llama.cpp Commit 18c2e17. A specially crafted .…EPSS 1.3%9.8CVE-2024-21802Ggml llama.cpp heap-based buffer overflow vulnerabilityA heap-based buffer overflow vulnerability exists in the GGUF library info->ne functionality of llama.cpp Commit 18c2e17. A specially crafted .ggu…EPSS 1.4%9.8CVE-2024-21825Ggml llama.cpp integer overflow vulnerabilityA heap-based buffer overflow vulnerability exists in the GGUF library GGUF_TYPE_ARRAY/GGUF_TYPE_STRING parsing functionality of llama.cpp Commit 18c2…EPSS 1.3%

Source: NIST National Vulnerability Database (record CVE-2026-52132), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.