Out-of-Bounds Write Vulnerability in Xquic Server on Linux
CVE-2026-1788

6.6MEDIUM

Key Information:

Vendor

Xquic Project

Status
Xquic Server
Vendor
CVE Published:
3 February 2026

What is CVE-2026-1788?

The Xquic Server on Linux is affected by an out-of-bounds write vulnerability that can lead to buffer manipulation. This flaw exists within the QUIC protocol implementation’s packet processing module and can impact certain versions of the Xquic Server, specifically versions up to 1.8.3. This vulnerability poses a significant risk as it may allow attackers to exploit the affected server, leading to unpredictable behavior or potential system compromise. It’s crucial for users of the affected versions to apply necessary updates and security measures to mitigate this risk.

Affected Version(s)

Xquic Server Linux 0 <= 1.8.3

References

https://github.com/alibaba/xquic

CVSS V4

Score:
6.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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