An issue in Systrome Validation & Certification 1.0 allows an attacker to cause a denial of service via the t URL parameter in the qrcode_auth.html component

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.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

An issue in Systrome Validation & Certification 1.0 allows an attacker to cause a denial of service via the t URL parameter in the qrcode_auth.html component

Source published

22 Oct 2026 00:00:00 UTC

Source modified

26 Oct 2026 01:21:54 UTC

Observed here

26 Oct 2026 03:25:11 UTC

Source terms

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