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This vulnerability allows an attacker to trigger a segmentation fault, causing the program to crash and resulting in a Denial of Service (DoS). The issue occurs due to improper handling of multi-level nested syntax." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-674", "description": "Uncontrolled Recursion", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-25048" }, { "name": "RHBZ#2444840", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2444840" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25048.json" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:6761" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:5809" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:6762" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:42644" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:24977" } ], "solutions": [ { "lang": "en", "value": "RHSA-2026:6761: Red Hat AI Inference Server 3.2" }, { "lang": "en", "value": "RHSA-2026:5809: Red Hat AI Inference Server 3.2" }, { "lang": "en", "value": "RHSA-2026:6762: Red Hat AI Inference Server 3.2" }, { "lang": "en", "value": "RHSA-2026:42644: Red Hat OpenShift AI 2.25" }, { "lang": "en", "value": "RHSA-2026:24977: Red Hat OpenShift AI 2.25" } ], "timeline": [ { "lang": "en", "time": "2026-03-05T16:01:14.634Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-03-05T15:34:42.095Z", "value": "Made public." } ], "title": "xgrammar: xgrammar: Denial of Service via multi-level nested syntax", "workarounds": [ { "lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability." } ], "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-07-21T12:05:13.603Z" } } ] } }