CVE-2026-121727 — Vulnerability intelligence
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Published:
- CVSS
- 8.7
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
Kore before 4.3.0 contains an integer underflow vulnerability in HTTP request body handling that allows unauthenticated attackers to bypass http_body_max by sending more body bytes than declared. Attackers can send oversized first segments over many concurrent POST, PUT or DELETE connections, wrapping content_length to grow buffers unbounded and exhaust worker memory.