VulnerabilityAnalyzed
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.
HIGH 7.5EPSS 0.33%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.33% probability · 26th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-674
- Affected
- ggml/llama.cpp
- Source
- cve@mitre.org
References
- https://blog.ph4nt0m.xyz/ko/cves/cve-2026-52132/Third Party Advisory
- https://github.com/ggml-org/llama.cppProduct
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.