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Microsoft Security Response Center

Browse 15,547 advisories from this official source. Search by product, CVE, severity, or advisory ID.

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15,547 advisories

Each date says whether the vendor published or updated the bulletin. A vendor bulletin describes products that may be affected. It does not prove that the vulnerable product or version is installed in your environment.

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Microsoft Security Response CenterCVE-2026-110354
HighCVSS 7.5

HAProxy 3 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (persistent worker-thread CPU exhaustion) via an HTTP/1.1 chunked request. Although the H1 multiplexer drains the request before closing the stream, the parser repeatedly re-processes the same bytes without making progress. The affected thread stays busy at 100% CPU after timeouts expire and after the client disconnects, and repeated requests can consume all worker threads until the process is restarted.

Mariner

Affected productsazl3 haproxy 2.9.11-8 on Azure Linux 3.0
Vendor guidance

Release Notes

CVE-2026-110354
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