SB2026033174 - Anolis OS update for nginx
Published: March 31, 2026 Updated: May 22, 2026
Security Bulletin ID
SB2026033174
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2026-27654)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to a boundary error in the ngx_http_dav_module module. A remote attacker can send specially crafted request to the server, trigger a heap-based buffer overflow and perform a denial of service attack or modify source or destination file names outside the document root.
Remediation
Install update from vendor's website.