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Pre-auth heap buffer overflow in FreeSWITCH libresl Content-Length parsing (CVE-2026-49840)

github.com 2026-06-13 查看中文 →
Security Advisory CVE-2026-49840 Critical SignalWire / FreeSWITCH
Affected:
  • libresl <= 1.11.0
  • fs_cli <= 1.11.0
  • mod_esl <= 1.11.0
  • mod_hash <= 1.11.0
Fixed in:
  • libresl >= 1.11.1
Referenced CVEs: CVE-2026-49840 · 9.1
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