SB2026092140 - Anolis OS update for python-tornado
Published: September 21, 2026
Security Bulletin ID
SB2026092140
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer over-read (CVE-ID: CVE-2026-49854)
CWE-ID: CWE-126 - Buffer over-read
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to a buffer over-read in the tornado.speedups websocket_mask function when processing XSRF tokens. A remote attacker can send a crafted XSRF token with a short mask to disclose sensitive information.
The issue is reachable when xsrf_cookies is enabled and the native extension is active.
Remediation
Install update from vendor's website.