PT-2026-23453 · Xgrammar · Xgrammar

Ylwango613 · Published 2026-03-05 · Updated 2026-03-13 · CVE-2026-25048

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions xgrammar versions prior to 0.1.32

Description xgrammar, an open-source library for structured generation, experienced a segmentation fault due to multi-level nested syntax in versions prior to 0.1.32. This issue can lead to a denial-of-service condition.

Recommendations Update to version 0.1.32 or later.

Exploit

Fix

DoS

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

CVE-2026-25048

GHSA-7RGV-GQHR-FXG3

Affected Products

Xgrammar

References · 12

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25048.json · Exploit
• https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-7rgv-gqhr-fxg3 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-7rgv-gqhr-fxg3 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-25048 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-25048 · Security Note
• https://github.com/mlc-ai/xgrammar/releases/tag/v0.1.32 · Note
• https://github.com/mlc-ai/xgrammar · Note
• https://twitter.com/cyberbivash/status/2029617589165412373 · Twitter Post
• https://t.me/cveNotify/155453 · Telegram Post
• https://twitter.com/CVEnew/status/2029654734173286410 · Twitter Post
• https://t.me/CVEtracker/46457 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2029635844479369612 · Twitter Post