Medium severity · published Jul 27, 2026
CVE-2026-17501
ggml-org llama.cpp JSON-Schema-to-GBNF Conversion json-schema-to-grammar.cpp transform recursion
5.3
CVSS
0.7%
EPSS
No
On KEV
Description
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 uncontrolled recursion. The attack may be initiated remotely. The pull request to fix this issue awaits acceptance.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LL
llama.cpp · ggml-org
e15efe0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-17501
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-17501
github.com
https://github.com/ggml-org/llama.cpp/
github.com
https://github.com/ggml-org/llama.cpp/issues/25283
github.com
https://github.com/ggml-org/llama.cpp/pull/25308
vuldb.com
https://vuldb.com/cve/CVE-2026-17501
vuldb.com
https://vuldb.com/submit/798504
vuldb.com
https://vuldb.com/vuln/383354
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