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Vendor advisories

Microsoft Security Response Center

Browse 15,805 advisories from this official source. Search by product, CVE, severity, or advisory ID.

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15,805 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-2026-56412
MediumCVSS 4.9

libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219.

Mariner

Affected productsazl3 expat 2.6.4-6 on Azure Linux 3.0, azl3 cmake 3.30.3-13 on Azure Linux 3.0, azl3 python3 3.12.9-11 on Azure Linux 3.0
Fixed versions2.8.2-1
Vendor guidance

CBL-Mariner Releases

CVE-2026-50219CVE-2026-56412
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