Aws S2n Tls
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By the Year
In 2026 there have been 1 vulnerability in Aws S2n Tls with an average score of 6.5 out of ten.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 1 | 6.50 |
It may take a day or so for new S2n Tls vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Aws S2n Tls Security Vulnerabilities
s2n-tls before 1.7.6: TLS1.3 Content Type bypass MITM Silent Record Drop
CVE-2026-16317
6.5 - Medium
- July 21, 2026
Missing validation of the outer content_type byte on TLS 1.3 encrypted records in s2n-tls allows an active man-in-the-middle to silently discard individual application data records without either endpoint detecting the modification. RFC 8446 Section 5.2 requires that the outer content_type of all encrypted TLS 1.3 records must be application_data (0x17). The s2n-tls AEAD implementation hardcodes this value in the additional authenticated data rather than using the actual wire byte, so the outer content_type is not covered by the authentication tag. This enables selective suppression of application data. In HTTP pipelining scenarios, dropping a TLS record containing an HTTP request can cause request/response desynchronization, where subsequent responses are delivered to the wrong requests. In write-heavy workloads, a dropped record containing a write request can result in undetectable data loss when the client interprets a subsequent success response as confirmation of the dropped write. All TLS 1.3 connections are affected. Both TLS clients and servers are affected. TLS 1.2 and QUIC connections are not affected. We recommend you upgrade s2n-tls to version v1.7.6
Improper Validation of Integrity Check Value
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