CVE-2026-3849

Stack Buffer Overflow in wcHpkeLabeledExtract via Oversized ECH Config. A vulnerability existed in wolfSSL 5.8.4 ECH Encrypted Client Hello support, where a maliciously crafted ECH config could cause a stack buffer overflow on the client side, leading to potential remote execution and client...

CVE-2026-3849 Buffer Overflow in HPKE via Oversized ECH Config

Stack Buffer Overflow in wcHpkeLabeledExtract via Oversized ECH Config. A vulnerability existed in wolfSSL 5.8.4 ECH Encrypted Client Hello support, where a maliciously crafted ECH config could cause a stack buffer overflow on the client side, leading to potential remote execution and client...

Race Condition

@hpke/core is vulnerable to Race Condition. The vulnerability is due to the public SenderContext Seal API having a race condition which allows for the same AEAD nonce to be re-used for multiple Seal calls, where an attacker can exploit this to cause complete loss of Confidentiality and Integrity ...

hpke-rs (>=0.1.0-pre.1, <=0.1.0-pre.2), openmls (>=0.4.0-pre.1, <=0.4.0-pre.2) +2 more potentially affected by unknown CVE via hpke-rs-rust-crypto (0.1.1)

hpke-rs-rust-crypto CARGO version 0.1.1 is affected by a known vulnerability. The following packages have a transitive dependency on hpke-rs-rust-crypto and may be impacted: - hpke-rs =0.1.0-pre.1, =0.4.0-pre.1, =0.1.0-pre.1, =0.4.0, =0.9.0 Source cves: unknown CVE Source advisory:...

openmls (>=0.4.0-pre.1, <=0.4.0-pre.2), openmls_evercrypt (>=0.1.0-pre.1, <=0.1.0-pre.2) +2 more potentially affected by unknown CVE via hpke-rs (0.1.2)

hpke-rs CARGO version 0.1.2 is affected by a known vulnerability. The following packages have a transitive dependency on hpke-rs and may be impacted: - openmls =0.4.0-pre.1, =0.1.0-pre.1, =0.1.0-pre.1, =0.4.0, =0.9.0 Source cves: unknown CVE Source advisory: OSV:GHSA-G433-PQ76-6CMF...

openmls (>=0.4.0-pre.1, <=0.4.0-pre.2), openmls_evercrypt (>=0.1.0-pre.1, <=0.1.0-pre.2) +2 more potentially affected by unknown CVE via hpke-rs (0.1.2)

hpke-rs CARGO version 0.1.2 is affected by a known vulnerability. The following packages have a transitive dependency on hpke-rs and may be impacted: - openmls =0.4.0-pre.1, =0.1.0-pre.1, =0.1.0-pre.1, =0.4.0, =0.9.0 Source cves: unknown CVE Source advisory: OSV:RUSTSEC-2026-0069...

openmls (>=0.4.0-pre.1, <=0.4.0-pre.2), openmls_evercrypt (>=0.1.0-pre.1, <=0.1.0-pre.2) +2 more potentially affected by unknown CVE via hpke-rs (0.1.2)

hpke-rs CARGO version 0.1.2 is affected by a known vulnerability. The following packages have a transitive dependency on hpke-rs and may be impacted: - openmls =0.4.0-pre.1, =0.1.0-pre.1, =0.1.0-pre.1, =0.4.0, =0.9.0 Source cves: unknown CVE Source advisory: OSV:RUSTSEC-2026-0070...

RUSTSEC-2026-0069 Incorrect Length Encoding on KDF Export

Passing values length 65535 to Context::export produces output that disagrees with the RFC 9180 label encoding. In particular the length value is cast to u16 truncating any value exceeding 65535. Impact Applications that use hpke-rs to export very large secrets would experience interoperability...

Panic When Opening or Sealing on Export-Only Context

Constructing an HPKE Context with the AEAD algorithm set to HpkeExport resulted in a panic when calling Context::seal, or Context::open. This was due to an underflowing integer subtraction when calculating the length of a vector allocation for the AEAD nonce, which would panic on its own in debug...

RUSTSEC-2026-0070 Panic When Opening or Sealing on Export-Only Context

Constructing an HPKE Context with the AEAD algorithm set to HpkeExport resulted in a panic when calling Context::seal, or Context::open. This was due to an underflowing integer subtraction when calculating the length of a vector allocation for the AEAD nonce, which would panic on its own in debug...

Incorrect Length Encoding on KDF Export

Passing values length 65535 to Context::export produces output that disagrees with the RFC 9180 label encoding. In particular the length value is cast to u16 truncating any value exceeding 65535. Impact Applications that use hpke-rs to export very large secrets would experience interoperability...

openmls (>=0.4.0-pre.1, <=0.4.0-pre.2), openmls_evercrypt (>=0.1.0-pre.1, <=0.1.0-pre.2) +2 more potentially affected by unknown CVE via hpke-rs (0.1.2)

hpke-rs CARGO version 0.1.2 is affected by a known vulnerability. The following packages have a transitive dependency on hpke-rs and may be impacted: - openmls =0.4.0-pre.1, =0.1.0-pre.1, =0.1.0-pre.1, =0.4.0, =0.9.0 Source cves: unknown CVE Source advisory: OSV:RUSTSEC-2026-0071...

hpke-rs (>=0.1.0-pre.1, <=0.1.0-pre.2), openmls (>=0.4.0-pre.1, <=0.4.0-pre.2) +2 more potentially affected by unknown CVE via hpke-rs-rust-crypto (0.1.1)

hpke-rs-rust-crypto CARGO version 0.1.1 is affected by a known vulnerability. The following packages have a transitive dependency on hpke-rs-rust-crypto and may be impacted: - hpke-rs =0.1.0-pre.1, =0.4.0-pre.1, =0.1.0-pre.1, =0.4.0, =0.9.0 Source cves: unknown CVE Source advisory:...

Missing Check for All-Zero X25519 Shared Secret

Computing an X25519 shared secret with x25519dalek::StaticSecret::diffiehellman does not include the check that the key exchange was contributory, i.e. does not ensure on its own that the resulting shared secret is non-zero. Impact RFC 9180 mandates that implementations of HPKE must check for all...

CVE-2025-64767

hpke-js is a Hybrid Public Key Encryption HPKE module built on top of Web Cryptography API. Prior to version 1.7.5, the public SenderContext Seal API has a race condition which allows for the same AEAD nonce to be re-used for multiple Seal calls. This can lead to complete loss of Confidentiality...

CVE-2025-64767 hpke-js reuses AEAD nonces

hpke-js is a Hybrid Public Key Encryption HPKE module built on top of Web Cryptography API. Prior to version 1.7.5, the public SenderContext Seal API has a race condition which allows for the same AEAD nonce to be re-used for multiple Seal calls. This can lead to complete loss of Confidentiality...

CVE-2025-64767

CVE-2025-64767 (hpke-js) affects hpke-js prior to version 1.7.5, where the public SenderContext Seal() API can race and reuse the same AEAD nonce for multiple calls. This nonce reuse can lead to complete loss of confidentiality and integrity of produced messages. The issue is fixed in version 1.7...

CVE-2025-64767 hpke-js reuses AEAD nonces

hpke-js is a Hybrid Public Key Encryption HPKE module built on top of Web Cryptography API. Prior to version 1.7.5, the public SenderContext Seal API has a race condition which allows for the same AEAD nonce to be re-used for multiple Seal calls. This can lead to complete loss of Confidentiality...

Nonce Reuse

Overview @hpke/core is an A Hybrid Public Key Encryption HPKE core module for various JavaScript runtimes Affected versions of this package are vulnerable to Nonce Reuse via the public SenderContext Seal API. An attacker can compromise the confidentiality and integrity of encrypted messages by...

@avalabs/avalanche-module (>=0.0.0-CP-8940-20240801175729, <=4.0.4), @avalabs/bitcoin-module (>=0.0.0-CP-8940-20240801175729, <=4.0.4) +20 more potentially affected by CVE-2025-64767 via @hpke/core (>=1.2.5, <=1.7.4)

@hpke/core NPM version =1.2.5, =0.0.0-CP-8940-20240801175729, =0.0.0-CP-8940-20240801175729, =2.8.0-canary.a436aaa.0, =2.8.0-alpha.197, =2.8.0-alpha.197, =2.8.0-alpha.197, =2.8.0-alpha.197, =2.8.0-canary.a436aaa.0, =2.8.0-alpha.197, =2.8.0-alpha.197, =2.8.0-alpha.197, =2.8.0-canary.a436aaa.0,...