Deserialization in Ggml-Org Llama.cpp
CVE-2026-78147
A vulnerability was found in ggml-org llama.cpp bec4772f6. The impacted element is the function deserialize_tensor of the file ggml/src/ggml-rpc/ggml-rpc.cpp of the component ggml-RPC Server. Performing a manipulation of the argument op/op_params results in deserialization. The attack may be initiated remotely. This vulnerability is distinct from CVE-2026-34159 (GHSA-j8rj-fmpv-wcxw, PR #20908), which only added a buffer==nullptr rejection in create_node() and does not validate op or op_params. The reported GitHub issue was closed automatically due to inactivity.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.006 (45.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.001
Affected products
- Ggml-Org Llama.cpp — versions bec4772f6
Weakness classification (CWE)
References
- github.com/ggml-org/llama.cpp/ (product)
- github.com/ggml-org/llama.cpp/issues/25289 (issue-tracking)
- vuldb.com/cve/CVE-2026-78147 (third-party-advisory)
- vuldb.com/submit/882534 (third-party-advisory)
- vuldb.com/vuln/394534 (technical-description, vdb-entry)
- vuldb.com/vuln/394534/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-78147?
- CVE-2026-78147 is a high-severity vulnerability in Ggml-Org Llama.cpp, classified under Improper Input Validation. CVSS score: 7.3/10. Published 2026-08-23.
- How severe is CVE-2026-78147?
- High severity. CVSS v3 base score is 7.3 out of 10.