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CVE-2026-62899Published

.NET Security Feature Bypass Vulnerability

Recorded JSON

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

CVE-2026-62899

Exact risk observation. Current source statements above are a separate evidence layer. Latest risk evidence.

No KEV entry is attached to this observation; this is not evidence that exploitation is absent.

FIRST EPSS: 0.75 % · percentile 55.11 % · scored 6 Nov 2026.

Observed 06 Nov 2026 19:10:17 UTC · Complete immutable risk JSON

Immutable source observations

11 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

5 Nov 2026 12:46:23 UTC

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.

euvd · EUVD-2026-56407 · Published

3 Nov 2026 12:04:48 UTC

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.

euvd · EUVD-2026-56407 · Published

1 Nov 2026 11:26:55 UTC

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.

euvd · EUVD-2026-56407 · Published

30 Oct 2026 10:55:12 UTC

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.

euvd · EUVD-2026-56407 · Published

29 Oct 2026 16:15:39 UTC

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.

nvd · CVE-2026-62899 · Published

28 Oct 2026 08:40:58 UTC

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.

euvd · EUVD-2026-56407 · Published

25 Oct 2026 14:19:28 UTC

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.

nvd · CVE-2026-62899 · Published

23 Oct 2026 16:01:25 UTC

Microsoft Security Advisory CVE-2026-62899 – .NET Security Feature Bypass Vulnerability

osv · GHSA-r6mh-95jw-g7qg · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 7 Nov 10:00 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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