openSUSE: python-tornado6 Important DoS XSS Threat Advisory 2026:20015-1
opensuse
January 13, 2026
An update that solves 3 vulnerabilities and has 3 bug fixes can now be installed.
Description
This update for python-tornado6 fixes the following issues:
- CVE-2025-67724: unescaped `reason` argument used in HTTP headers and in HTML default error pages can be used by
attackers to launch header injection or XSS attacks (bsc#1254903).
- CVE-2025-67725: quadratic complexity of string concatenation operations used by the `HTTPHeaders.add` method can lead
o DoS when processing a maliciously crafted HTTP request (bsc#1254905).
- CVE-2025-67726: quadratic complexity algorithm used in the `_parseparam` function of `httputil.py` can lead to DoS
when processing maliciously crafted parameters in a `Content-Disposition` header (bsc#1254904).
Patch instructions:
To install this openSUSE security update use the suse recommended installation methods
like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
- openSUSE Leap 16.0
zypper in -t patch openSUSE-Leap-16.0-129=1
Topics Covered
Patch
Package List
- openSUSE Leap 16.0:
python313-tornado6-6.5-160000.3.1
References
* bsc#1254903
* bsc#1254904
* bsc#1254905
References:
* https://www.suse.com/security/cve/CVE-2025-67724.html
* https://www.suse.com/security/cve/CVE-2025-67725.html
* https://www.suse.com/security/cve/CVE-2025-67726.html
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Severity
important
Lowest
Low
Medium
High
Critical
Announcement ID: openSUSE-SU-2026:20015-1
Rating: important
Affected Products:
openSUSE Leap 16.0
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Topics Covered
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