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CVE-2026-25048

27
FAUCET Score

CVE-2026-25048 is a segmentation fault vulnerability (CWE-674) in the xgrammar library, specifically affecting versions prior to 0.1.32, due to multi-level nested syntax. This vulnerability carries a high CVSSv4 score of 8.7, indicating a network-exploitable issue with high availability impact, though other impacts are negligible. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.1.32CPE matchmatch criteria
cpe:2.3:a:mlc-ai:xgrammar:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.7HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
49.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0071 is in the 26th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: xgrammarFixed in: 0.1.32

Vendor Advisories (1)

pipGHSA-7rgv-gqhr-fxg3high

xgrammar vulnerable to DoS via multi-layer nesting

Mar 5, 2026

References

access.redhat.com / errata/RHSA-2026:24977
access.redhat.com / errata/RHSA-2026:42644
access.redhat.com / errata/RHSA-2026:5809
access.redhat.com / errata/RHSA-2026:6761
access.redhat.com / errata/RHSA-2026:6762
access.redhat.com / security/cve/CVE-2026-25048
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-25048.json
github.com / mlc-ai/xgrammar/releases/tag/v0.1.32
Release Notes
github.com / mlc-ai/xgrammar/security/advisories/GHSA-7rgv-gqhr-fxg3
ExploitVendor Advisory