7.5High
Ggml Llama.Cpp
CVE-2026-52132
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.
What this means for your business
- It affects Ggml Llama.Cpp. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.3% chance of attack attempts being seen in the next 30 days, ranking above 26% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Ggml Llama.Cpp, and which version. The affected versions are listed further down this page.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 7.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness
- CWE-674
- Assigned by
- cve@mitre.org
Dates
- Published
- 2026-09-01
- Last modified
- 2026-09-04
- Sources
- NVD
Affected products
- Ggml Llama.Cpp- 0.4.0
As listed in the NVD configuration data. Not a statement about your estate.