EUVD-2026-45312

Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon's RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom list of headers to strip. This could cause inadvertent leakage of sensitive data when the initial...

CVE-2026-54171 Excon: redact additional sensitive/risky headers when following redirects

Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon's RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom list of headers to strip. This could cause inadvertent leakage of sensitive data when the initial...

EUVD-2026-45310

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an...

Allocation of Resources Without Limits or Throttling

Overview mcp is a The official Ruby SDK for Model Context Protocol servers and clients Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the stdio transports lib/mcp/server/transports/stdiotransport.rb and lib/mcp/client/stdio.rb, which ca...

DNS Rebinding

Overview mcp is a The official Ruby SDK for Model Context Protocol servers and clients Affected versions of this package are vulnerable to DNS Rebinding in the handlepost method of MCP::Server::Transports::StreamableHTTPTransport in lib/mcp/server/transports/streamablehttptransport.rb, which...

Security update for ruby3.4

This update for ruby3.4 fixes the following issues CVE-2026-42258: Net:IMAP: Command Injection via Symbol Arguments bsc1268011. CVE-2026-47240: Net:IMAP: Command Injection via non-synchronizing literal in "raw" argument bsc1268337. CVE-2026-47241: Net:IMAP: Denial of Service via incomplete raw...

SUSE-SU-2026:3090-1 Security update for ruby3.4

This update for ruby3.4 fixes the following issues - CVE-2026-42258: Net:IMAP: Command Injection via Symbol Arguments bsc1268011. - CVE-2026-47240: Net:IMAP: Command Injection via non-synchronizing literal in 'raw' argument bsc1268337. - CVE-2026-47241: Net:IMAP: Denial of Service via incomplete...

CVE-2026-54497: Concurrent Execution using Shared Resource with Improper Synchronization

viewcomponent is a framework for building reusable, testable, and encapsulated view components in Ruby on Rails. From 4.0.0 until 4.12.0, ViewComponent::Base instances retain render-scoped objects across calls to renderin; if the same component, collection, or spacer component instance is reused...

CVE-2026-53727: Server-Side Request Forgery (SSRF)

cssparser is a Ruby CSS parser. From 2.2.0 until 3.0.0, CssParser::Parserreadremotefile in lib/cssparser/parser.rb, and therefore loaduri! and the @import-following branch of addblock!, issued HTTP and HTTPS requests against any host, port, and URI without a scheme allowlist, host or IP filtering...

CVE-2026-54463: Allocation of Resources Without Limits or Throttling

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an...

CVE-2026-54171: Insertion of Sensitive Information Into Sent Data

Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon's RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom list of headers to strip. This could cause inadvertent leakage of sensitive data when the initial...

Ubuntu 16.04 LTS : Ruby vulnerabilities (USN-8556-1)

The remote Ubuntu 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8556-1 advisory. It was discovered that the Net::IMAP client in Ruby did not properly sanitize Symbol arguments passed to IMAP commands. A remote attacker controlling a...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection via CodeMethodWriter in CodeMethodWriter.cs and RubyConventionService in RubyConventionService.cs. An attacker can inject arbitrary Ruby code into generated client classes by supplying an OpenAPI specification...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection via CodeMethodWriter in CodeMethodWriter.cs and RubyConventionService in RubyConventionService.cs. An attacker can inject arbitrary Ruby code into generated client classes by supplying an OpenAPI specification...

CVE-2026-59861

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Ruby generator embedded OpenAPI default fields, property names, and other schema-derived strings through CodeMethodWriter.cs and SanitizeForQuotedLiteral in Writers/StringExtensions.cs into Ruby double-quote...

CVE-2026-59861

Kiota Ruby generator vulnerability (CVE-2026-59861): Before version 1.32.0, the Ruby code generator embedded OpenAPI-derived strings into Ruby double-quoted literals without escaping interpolation markers (# {expr}, #$var, #@var). This allowed attacker-controlled interpolations to inject arbitrar...

CVE-2026-59861

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Ruby generator embedded OpenAPI default fields, property names, and other schema-derived strings through CodeMethodWriter.cs and SanitizeForQuotedLiteral in Writers/StringExtensions.cs into Ruby double-quote...

CVE-2026-59861 Kiota: Code Generation Literal Injection in Kiota Ruby Generator

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Ruby generator embedded OpenAPI default fields, property names, and other schema-derived strings through CodeMethodWriter.cs and SanitizeForQuotedLiteral in Writers/StringExtensions.cs into Ruby double-quote...

CVE-2026-59861 Kiota: Code Generation Literal Injection in Kiota Ruby Generator

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Ruby generator embedded OpenAPI default fields, property names, and other schema-derived strings through CodeMethodWriter.cs and SanitizeForQuotedLiteral in Writers/StringExtensions.cs into Ruby double-quote...

CVE-2026-59861 Kiota: Code Generation Literal Injection in Kiota Ruby Generator

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.0, Kiota's Ruby generator embedded OpenAPI default fields, property names, and other schema-derived strings through CodeMethodWriter.cs and SanitizeForQuotedLiteral in Writers/StringExtensions.cs into Ruby double-quote...