Rustls from 0.23.13 before 0.23.45 accepts TLS 1.3 handshake messages at the wrong encryption level when they follow a key-changing message in the same record, because Deframer::aligned does not enforce RFC 8446 record-boundary alignment. A peer or on-path attacker can pack a pla...
Product
debian/rust-rustls vulnerabilities
6 published CVES affecting debian/rust-rustls, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 6
- Critical
- 0
- High
- 1
- Medium
- 5
- Low
- 0
- Unscored
- 0
- CISA KEV
- 0
Latest debian/rust-rustls CVEs
Newest publication first
-
MediumCVSS 6.9
-
MediumCVSS 4.6
rustls 0.23.44 and 0.23.45 contain an information disclosure vulnerability that sends application data buffered before the handshake completes to the client-facing server when Encrypted Client Hello is rejected. Because start_traffic() queues plaintext from ClientConnection::writ...
-
CVE-2026-123611 rustls before 0.23.46 Key Exchange Downgrade via Unauthenticated ServerHello
PublishedMediumCVSS 6.3 EPSS 0.19%rustls before 0.23.46 contains a key exchange downgrade vulnerability that allows network attackers to poison the per-server-name key-exchange group record via an unauthenticated ServerHello. Attackers can answer one connection with a ServerHello selecting X25519, causing later C...
-
CVE-2026-123610 rustls before 0.23.46 Denial of Service via Brotli Certificate Decompression
PublishedMediumCVSS 6.3rustls before 0.23.46 contains an uncontrolled memory allocation flaw in its optional Brotli certificate decompression, which limits decompressed output size but accepts an input-selected large history window. Malicious peers can send a certificate with a five-byte Brotli header...
-
CVE-2026-123609 Rustls before 0.23.46 and 0.24.0-dev.1 before 0.24.0-dev.2 Secret Exposure via Debug
PublishedMediumCVSS 4.1Rustls before 0.23.46 and 0.24.0-dev.1 before 0.24.0-dev.2 contains an information disclosure vulnerability where derived Debug formatting of client session values exposes secret key material. Custom ClientSessionStore implementations that log Tls12ClientSessionValue or Tls13Clie...
-
HighCVSS 7.5
Rustls is a modern TLS library written in Rust. rustls::ConnectionCommon::complete_io could fall into an infinite loop based on network input. When using a blocking rustls server, if a client send a close_notify message immediately after client_hello, the server's complete_io wil...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.