Fixes for security issues (CVE-2025-13836, CVE-2025-67725, CVE-2025-67726)#744
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m-czernek merged 4 commits intoopenSUSE/release/3006.0from Jan 14, 2026
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httputil: Fix quadratic performance of repeated header lines Previouisly, when many header lines with the same name were found in an HTTP request or response, repeated string concatenation would result in quadratic performance. This change does the concatenation lazily (with a cache) so that repeated headers can be processed efficiently. Security: The previous behavior allowed a denial of service attack via a maliciously crafted HTTP message, but only if the max_header_size was increased from its default of 64kB.
httputil: Fix quadratic behavior in _parseparam Prior to this change, _parseparam had O(n^2) behavior when parsing certain inputs, which could be a DoS vector. This change adapts logic from the equivalent function in the python standard library in https://github.com/python/cpython/pull/136072/files
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What does this PR do?
Fixes for security issues (CVE-2025-67725, CVE-2025-67726)
What issues does this PR fix or reference?
Upstream PRs:
tornadoweb/tornado#3553
saltstack/salt#68595 (tornadoweb/tornado@771472c)
saltstack/salt#68611
Previous Behavior
Remove this section if not relevant
New Behavior
Remove this section if not relevant
Merge requirements satisfied?
[NOTICE] Bug fixes or features added to Salt require tests.
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