What is CVE-2026-16317?
CVE-2026-16317 is a vulnerability in the s2n-tls library where missing validation of the outer content_type byte on TLS 1.3 encrypted records allows an active man-in-the-middle to silently discard individual application data records without detection. It violates RFC 8446 Section 5.2, and applications using TLS 1.3 should update s2n-tls immediately.
Azərbaycanca: CVE-2026-16317, s2n-tls kitabxanasında TLS 1.3 şifrələnmiş qeydlərinin xarici content_type baytının yoxlanılmaması zəifliyidir. Bu, aktiv man-in-the-middle hücumçusuna tətbiq məlumat qeydlərini hər iki tərəfə hiss etdirmədən səssizcə silməyə imkan verir. TLS 1.3 istifadə edən tətbiqlər dərhal s2n-tls versiyasını yeniləməlidir.
FAQ2
In which library was CVE-2026-16317 discovered and what is its impact?
This vulnerability was discovered in the s2n-tls library. It allows an active man-in-the-middle attacker to silently discard application data records without detection by either side.
What measure should be taken to protect against CVE-2026-16317?
Applications using TLS 1.3 should update the s2n-tls version immediately.
See also6
This explainer is AI-written from source data — skopnix's own reporting on this CVE; CVSS scores, vendors and versions are never invented. See NVD for the official record.