CVE-2026-40070 bsv-sdk and bsv-wallet persist unverified certifier signatures in acquire_certificate (direct and issuance paths)

BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.3.1 to before 0.8.2, BSV::Wallet::WalletClientacquirecertificate persists certificate records to storage without verifying the certifier's signature over the certificate contents. In acquisitionprotocol: 'direct', the caller supplies all...

CVE-2026-40069

The vulnerability affects the BSV Ruby SDK (gem) prior to version 0.8.2, specifically BSV::Network::ARC failure detection. From 0.1.0 to 0.8.1, ARC only recognizes REJECTED and DOUBLE_SPEND_ATTEMPTED; responses with txStatus values INVALID, MALFORMED, MINED_IN_STALE_BLOCK, or any ORPHAN-containin...

CVE-2026-40069 bsv-sdk ARC broadcaster treats INVALID/MALFORMED/ORPHAN responses as successful broadcasts

BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.1.0 to before 0.8.2, BSV::Network::ARC's failure detection only recognises REJECTED and DOUBLESPENDATTEMPTED. ARC responses with txStatus values of INVALID, MALFORMED, MINEDINSTALEBLOCK, or any ORPHAN-containing extraInfo / txStatus are...

CVE-2026-40069: Improper Check for Unusual or Exceptional Conditions

BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.1.0 to before 0.8.2, BSV::Network::ARC's failure detection only recognises REJECTED and DOUBLESPENDATTEMPTED. ARC responses with txStatus values of INVALID, MALFORMED, MINEDINSTALEBLOCK, or any ORPHAN-containing extraInfo / txStatus are...

PT-2026-31672

Name of the Vulnerable Software and Affected Versions BSV Ruby SDK versions 0.3.1 through 0.8.1 BSV Ruby Wallet versions 0.1.2 through 0.3.3 Description The BSV Ruby SDK and Wallet contain a flaw in the acquire certificate function, which does not verify the certifier's signature over the...

CVE-2026-40070: Improper Verification of Cryptographic Signature

BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.3.1 to before 0.8.2, BSV::Wallet::WalletClientacquirecertificate persists certificate records to storage without verifying the certifier's signature over the certificate contents. In acquisitionprotocol: 'direct', the caller supplies all...

PT-2026-31671

Name of the Vulnerable Software and Affected Versions BSV Ruby SDK versions 0.1.0 through 0.8.1 Description The BSV Ruby SDK's ARC broadcaster incorrectly treats certain failure statuses from the ARC endpoint as successful broadcasts. Specifically, responses with txStatus values of INVALID,...

Session Hijacking

MCP Ruby SDK is vulnerable to Session Hijacking. The vulnerability is due to insufficient session binding, where an attacker who obtains a valid session ID can completely hijack the victim's Server-Sent Events SSE stream and intercept all real-time data...

Session Fixation

Overview mcp is a The official Ruby SDK for Model Context Protocol servers and clients Affected versions of this package are vulnerable to Session Fixation through the storestreamforsession process in lib/mcp/server/transports/streamablehttptransport.rb. An attacker can intercept all subsequent...

CVE-2026-33946

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamablehttptransport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's...

CVE-2026-33946 MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Session ID Replay

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamablehttptransport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's...

CVE-2026-33946

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamablehttptransport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's...

CVE-2026-33946 MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Session ID Replay

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamablehttptransport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's...

CVE-2026-33946 MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Session ID Replay

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamablehttptransport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's...

CVE-2026-33946

The CVE affects the MCP Ruby SDK prior to 0.9.2. In streamable_http_transport.rb, an attacker with a valid session ID can hijack the victim’s SSE stream and intercept real-time data, due to insufficient session binding. Version 0.9.2 patches this. No additional exploit details are provided beyond...

PT-2026-28576

Name of the Vulnerable Software and Affected Versions MCP Ruby SDK versions prior to 0.9.2 Description The Ruby SDK for Model Context Protocol servers and clients contains a session hijacking issue in its streamable http transport.rb implementation. An attacker obtaining a valid session ID can...

CVE-2026-33946: Session Fixation

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamablehttptransport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's...

EUVD-2025-203943

AWS SDK for Ruby's S3 Encryption Client has a Key Commitment Issue...

CVE-2025-14762

A flaw was found in the AWS SDK for Ruby, an open-source client-side encryption library. A user with write access to an S3 Simple Storage Service bucket can exploit a missing cryptographic key commitment. This allows the introduction of a new Encrypted Data Key EDK that decrypts to different...

CVE-2025-14762

Missing cryptographic key commitment in the AWS SDK for Ruby may allow a user with write access to the S3 bucket to introduce a new EDK that decrypts to different plaintext when the encrypted data key is stored in an "instruction file" instead of S3's metadata record. To mitigate this issue,...