CVE-2026-86252: Schwachstellen-Eintrag (NVD)
h3 versions before 1.15.9 fail to sanitize carriage return characters in EventStream data and comment fields, allowing attackers to inject arbitrary SSE events by including unsanitized carriage returns. Attackers can inject event type directives, split single push calls into multiple browser-parsed events, or escape comment fields to inject data, bypassing the prior CVE fix that only addressed newline injection.
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📊 Historien-Charts — Criticals-Trend · Vendors · EPSS-Verteilung
| Tier | 2026-08-29 | 2026-09-06 |
|---|---|---|
| ≥90 % | 4 | 0 |
| ≥50 % | 4 | 0 |
| ≥10 % | 3 | 0 |
| <10 % | 304 | 300 |
CVE-2026-86252 | h3js h3 up to 1.15.8 injection (EUVD-2026-72108)
A vulnerability classified as problematic was found in h3js h3 up to 1.15.8. Affected is an unknown function. The manipulation results in injection. This vulnerability is known as CVE-2026-86252. It is possible to launch the attack remotely