UBUNTU-CVE-2026-18581

Source
https://ubuntu.com/security/CVE-2026-18581
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18581.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-18581
Upstream
  • CVE-2026-18581
Published
2026-08-03T01:16:00Z
Modified
2026-08-06T00:12:19Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • 1.9 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A vulnerability was determined in ggml-org llama.cpp e15efe0. Affected by this issue is some unknown functionality of the file common/jinja/parser.cpp of the component Jinja Minja Template Parser. Executing a manipulation with the input {{9|9|{ can lead to reachable assertion. The attack requires local access. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

References

Affected packages

Ubuntu:26.04:LTS / llama.cpp

Package

Name
llama.cpp
Purl
pkg:deb/ubuntu/llama.cpp?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

Other
5882+dfsg-2
8064+dfsg-1ubuntu1
8681+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "8681+dfsg-1",
            "binary_name": "libllama0"
        },
        {
            "binary_version": "8681+dfsg-1",
            "binary_name": "llama.cpp"
        },
        {
            "binary_version": "8681+dfsg-1",
            "binary_name": "llama.cpp-examples"
        },
        {
            "binary_version": "8681+dfsg-1",
            "binary_name": "llama.cpp-tests"
        },
        {
            "binary_version": "8681+dfsg-1",
            "binary_name": "llama.cpp-tools"
        },
        {
            "binary_version": "8681+dfsg-1",
            "binary_name": "llama.cpp-tools-extra"
        },
        {
            "binary_version": "8681+dfsg-1",
            "binary_name": "python3-gguf"
        }
    ]
}

Database specific

source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-18581.json"