Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network attack, no privileges required, only availability impact.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
A flaw has been found in ggml-org llama.cpp e15efe0. This vulnerability affects the function transform of the file common/json-schema-to-grammar.cpp of the component JSON-Schema-to-GBNF Conversion. This manipulation causes allocation of resources. The attack may be initiated remotely. The pull request to fix this issue awaits acceptance.
AnalysisAI
Remote denial of service in llama.cpp allows unauthenticated attackers to exhaust server resources via crafted JSON schema inputs that trigger unbounded recursion in the JSON-schema-to-GBNF conversion routine. Affected versions include commit e15efe0 and prior. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target application must invoke the `json-schema-to-grammar` converter on attacker-supplied JSON schemas (e.g., an API that accepts user-defined output structures). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 4.0 rates the impact as low availability with no confidentiality or integrity loss, yet the attack vector is network and requires no authentication (AV:N/PR:N), making it trivially reachable in exposed services. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A remote attacker sends a specially crafted JSON schema containing deeply nested patterns or empty quantifier groups to a service that uses llama.cpp’s schema-guided generation. The `transform` function recursively processes the input without depth bounds, consuming all available CPU or memory and rendering the service unresponsive until the process is restarted. |
| Remediation | Apply the patch from pull request #25308 (https://github.com/ggml-org/llama.cpp/pull/25308) which introduces a maximum nesting depth and safeguards against empty pattern repetition. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Arbitrary memory write in llama.cpp's RPC server allows remote unauthenticated attackers to corrupt arbitrary memory add
Remote code execution in llama.cpp (commit 18c2e17) is possible when a user opens a malicious .gguf model file, triggeri
Remote code execution in llama.cpp (commit 18c2e17) is possible when a victim loads a malicious .gguf model file, trigge
Remote code execution in llama.cpp (GGUF library) allows attackers to achieve arbitrary code execution by tricking a use
Remote code execution in llama.cpp (commit 18c2e17) occurs when the GGUF library's gguf_fread_str function parses a mali
Heap-based buffer overflow in llama.cpp's GGUF library header parser (commit 18c2e17) enables code execution when a vict
Remote code execution in llama.cpp RPC backend allows unauthenticated attackers with TCP access to achieve arbitrary mem
llama.cpp provides LLM inference in C/C++. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable,
Llama.cpp is LLM inference in C/C++. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no auth
Remote code execution in llama.cpp prior to commit b7824 is possible through a crafted GGUF file that exploits an intege
Local attackers can achieve heap buffer overflow in llama.cpp versions before b8146 through integer overflow in the GGUF
Denial of service in ggml-org llama.cpp allows remote attackers to crash the application by sending a crafted JSON schem
Same technique Denial Of Service
View allVendor StatusVendor
SUSE
Severity: ModerateShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-49061
GHSA-h334-888w-8prr