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RubyGems
1,138 known vulnerabilities.
Most affected packages
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Critical 9.8CVE-2026-122006 Public exploit
Active Storage: Possible arbitrary file write and read in image analysis
The activestorage gem before 8.1.4.1 for Ruby on Rails, when ImageMagick attachment processing occurs, can allow server read and write operations (e.g., reading secret_key_base) because the ImageMagick analyzer runs when a file is attached, and there is not a…
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Critical 10.0
Kobako Vulnerable to Sandbox Escape: guest eval reaches host RCE via method_missing → public_send (any bound Service)
Kobako is a Ruby gem that embeds a Wasm-isolated mruby interpreter inside applications, allowing execution of untrusted Ruby scripts (LLM-generated code, user formulas, student submissions, third-party plugins) in-process without giving them access to host me…
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Critical 9.9
OpenC3 COSMOS: Authenticated remote code execution via the user-writable config overlay (table definitions, cmd/tlm definitions, and script suites)
OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From 5.1.0 until 7.3.0, authenticated non-administrator users can write content under targets_modified/ that is later executed by multiple …
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Critical 9.5
Action Pack: Possible arbitrary file read and remote code execution in Active Storage variant processing
Action Pack is a framework for handling and responding to web requests. In versions prior to 7.2.3.2, 8.0.5.1 and 8.1.3.1, Active Storage does not disable libvips operations marked unsafe for untrusted content, allowing a crafted upload to invoke such an oper…
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Critical 9.6
Avo: Missing Authorization in Avo Association Attach Endpoint Allows Unauthorized Relationship Manipulation and Privilege Escalation
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to 3.32.1 and 4.0.0.beta.51, Avo's association attach workflow checks attach_<association>? in the UI and GET /resources/:resource/:id/:related/new path, but the actual write endpoint, PO…
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Critical 9.1
`jwt` (Ruby gem) - empty-key HMAC bypass
ruby-jwt is a Ruby implementation of the RFC 7519 OAuth JSON Web Token standard. Prior to 2.10.3 and 3.2.0, JWT.decode(token, '', true, algorithm: 'HS256') accepts an attacker-forged token because OpenSSL::HMAC.digest('SHA256', '', payload) returns a valid di…
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Critical 9.8CVE-2026-44024 Public exploit
Fluentd: Remote Code Execution (RCE) via Arbitrary File Write in `${tag}` Placeholder
Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, Fluentd allows dynamically constructing file paths using the ${tag} placeholder, and insufficient validation of ${tag} in …
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Critical 9.6
OpenC3 COSMOS: Administrative Actions via the Script Runner Tool
OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to version 7.0.0-rc3, the Script Runner widget allows users to execute Python and Ruby scripts directly from the openc3-COSMOS-script…
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Critical 9.6
OpenC3 COSMOS: SQL Injection in QuestDB Time-Series Data Base
OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From version 6.7.0 to before version 7.0.0-rc3, a SQL injection vulnerability exists in the Time-Series Database (TSDB) component of COSMOS…
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Critical 9.3
Decidim has a Cross-site scripting (XSS) vulnerability via user name field
Decidim is a participatory democracy framework. In versions below 0.30.5 and 0.31.0.rc1 through 0.31.0, a stored code execution vulnerability in the user name field allows a low-privileged attacker to execute arbitrary code in the context of any user who pass…
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Critical 9.3CVE-2026-39324 Public exploit
Rack::Session::Cookie secrets: decrypt failure fallback enables secretless session forgery and Marshal deserialization
Rack::Session is a session management implementation for Rack. From 2.0.0 to before 2.1.2, Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default deco…
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Critical 9.1
Graphiti Affected by Arbitrary Method Execution via Unvalidated Relationship Names
Graphiti is a framework that sits on top of models and exposes them via a JSON:API-compliant interface. Versions prior to 1.10.2 have an arbitrary method execution vulnerability that affects Graphiti's JSONAPI write functionality. An attacker can craft a mali…
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Critical 9.2CVE-2025-24293 Public exploit
Active Storage allowed transformation methods that were potentially unsafe
# Active Storage allowed transformation methods potentially unsafe Active Storage attempts to prevent the use of potentially unsafe image transformation methods and parameters by default. The default allowed list contains three methods allow for the circumven…
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Critical 10.0
Unauthenticated Remote Code Execution in openc3-api
OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From 5.0.0 to 6.10.1, OpenC3 COSMOS contains a critical remote code execution vulnerability reachable through the JSON-RPC API. When a JSON…
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Critical 9.3
ruby-saml Libxml2 Canonicalization errors can bypass Digest/Signature validation
The ruby-saml library implements the client side of an SAML authorization. Versions up to and including 1.12.4, are vulnerable to authentication bypass through the libxml2 canonicalization process used by Nokogiri for document transformation, which allows an …
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Critical 9.3
ruby-saml has a SAML authentication bypass due to namespace handling (parser differential)
The ruby-saml library is for implementing the client side of a SAML authorization. ruby-saml versions up to and including 1.12.4 contain an authentication bypass vulnerability due to an incomplete fix for CVE-2025-25292. ReXML and Nokogiri parse XML different…
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Critical 9.3CVE-2011-10026 Public exploit
Spreecommerce < 0.50.x API RCE
Spreecommerce versions prior to 0.50.x contain a remote command execution vulnerability in the API's search functionality. Improper input sanitation allows attackers to inject arbitrary shell commands via the search[instance_eval] parameter, which is dynamica…
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Critical 10.0CVE-2011-10019 Public exploit
Spreecommerce < 0.60.2 Search Parameter RCE
Spreecommerce versions prior to 0.60.2 contains a remote command execution vulnerability in its search functionality. The application fails to properly sanitize input passed via the search[send][] parameter, which is dynamically invoked using Ruby’s send meth…
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Critical 9.1CVE-2025-54887 Public exploit
jwe: Missing AES-GCM authentication tag validation in encrypted JWEs
jwe is a Ruby implementation of the RFC 7516 JSON Web Encryption (JWE) standard. In versions 1.1.0 and below, authentication tags of encrypted JWEs can be brute forced, which may result in loss of confidentiality for those JWEs and provide ways to craft arbit…
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Critical —
Nokogiri patches vendored libxml2 to resolve multiple CVEs
## Summary Nokogiri v1.18.9 patches the vendored libxml2 to address CVE-2025-6021, CVE-2025-6170, CVE-2025-49794, CVE-2025-49795, and CVE-2025-49796. ## Impact and severity ### CVE-2025-6021 A flaw was found in libxml2's xmlBuildQName function, where integer …
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Critical 9.1
OpenC3 COSMOS Vulnerable to Directory Traversal via /script-api/scripts/ endpoint
An issue in the /script-api/scripts/ endpoint of OpenC3 COSMOS before 6.1.0 allows attackers to execute a directory traversal.
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Critical 9.4CVE-2025-2304 Public exploit
Camaleon CMS Privilege Escalation
A Privilege Escalation through a Mass Assignment exists in Camaleon CMS When a user wishes to change his password, the 'updated_ajax' method of the UsersController is called. The vulnerability stems from the use of the dangerous permit! method, which allows a…
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Critical 9.3CVE-2025-25292 EPSS 65%
Ruby SAML vulnerable to SAML authentication bypass due to namespace handling (parser differential)
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differentl…
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Critical 9.3CVE-2025-25291 EPSS 21%
ruby-saml vulnerable to SAML authentication bypass due to DOCTYPE handling (parser differential)
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differentl…
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Critical —
omniauth-saml has dependency on ruby-saml version with Signature Wrapping Attack issue
### Summary There are 2 new Critical Signature Wrapping Vulnerabilities (CVE-2025-25292, CVE-2025-25291) and a potential DDOS Moderated Vulneratiblity (CVE-2025-25293) affecting ruby-saml, a dependency of omniauth-saml. The fix will be applied to ruby-saml an…
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Critical 9.1CVE-2025-27407 Public exploit
Remote code execution when loading a crafted GraphQL schema
graphql-ruby is a Ruby implementation of GraphQL. Starting in version 1.11.5 and prior to versions 1.11.8, 1.12.25, 1.13.24, 2.0.32, 2.1.14, 2.2.17, and 2.3.21, loading a malicious schema definition in `GraphQL::Schema.from_introspection` (or `GraphQL::Schema…
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Critical 9.0
Oxidized Web RANCID migration page allows unauthenticated user to gain control over Linux user account
In oxidized-web (aka Oxidized Web) before 0.15.0, the RANCID migration page allows an unauthenticated user to gain control over the Linux user account that is running oxidized-web.
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Critical 9.0
Decidim-Awesome: SQL injection in AdminAccountability
An improper neutralization of special elements used in an SQL command in the papertrail/version- model of the decidim_awesome-module <= v0.11.1 (> 0.9.0) allows an authenticated admin user to manipulate sql queries to disclose information, read and write file…
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Critical 9.1
Heap-based Buffer Overflow in sqlite-vec
sqlite-vec v0.1.1 was discovered to contain a heap buffer overflow via the npy_token_next function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted file.
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Critical 10.0
Arbitrary file write leading to RCE in Camaleon CMS
Camaleon CMS is a dynamic and advanced content management system based on Ruby on Rails. An arbitrary file write vulnerability accessible via the upload method of the MediaController allows authenticated users to write arbitrary files to any location on the w…
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Critical 10.0
omniauth-saml vulnerable to Improper Verification of Cryptographic Signature
ruby-saml, the dependent SAML gem of omniauth-saml has a signature wrapping vulnerability in <= v1.12.0 and v1.13.0 to v1.16.0 , see https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-jw9c-mfg7-9rx2 As a result, omniauth-saml created a [new r…
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Critical 10.0
The Ruby SAML library vulnerable to a SAML authentication bypass via Incorrect XPath selector
The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in <= 12.2 and 1.13.0 <= 1.16.0 does not properly verify the signature of the SAML Response. An unauthenticated attacker with access to any signed saml document (by t…
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Critical 9.8
Command Injection in sequenceserver
SequenceServer lets you rapidly set up a BLAST+ server with an intuitive user interface for personal or group use. Several HTTP endpoints did not properly sanitize user input and/or query parameters. This could be exploited to inject and run unwanted shell co…
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Critical 9.8
StringIO buffer overread vulnerability
A buffer-overread issue was discovered in StringIO 3.0.1, as distributed in Ruby 3.0.x through 3.0.6 and 3.1.x through 3.1.4. The ungetbyte and ungetc methods on a StringIO can read past the end of a string, and a subsequent call to StringIO.gets may return t…
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Critical 9.1
Rack CORS Middleware has Insecure File Permissions
rack-cors (aka Rack CORS Middleware) 2.0.1 has 0666 permissions for the .rb files.
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Critical 9.8
CommonMarker Integer Overflow Vulnerability
CommonMarker versions prior to 0.23.4 are at risk of an integer overflow vulnerability. This vulnerability can result in possibly unauthenticated remote attackers to cause heap memory corruption, potentially leading to an information leak or remote code execu…
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Critical 9.8
flash_tool Gem for Ruby File Download Handling Arbitrary Command Execution
The flash_tool gem through 0.6.0 for Ruby allows command execution via shell metacharacters in the name of a downloaded file.
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Critical 9.1
Decidim has broken access control in templates
Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. The `templates` module doesn't enforce the correct permissions, allowing any logged-in u…
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Critical 9.8
ruby-saml vulnerable to XPath injection
xml_security.rb in the ruby-saml gem before 1.0.0 for Ruby allows XPath injection and code execution because prepared statements are not used.
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Critical 9.8
Server-Side Template Injection in Camaleon CMS
Camaleon CMS v2.7.0 was discovered to contain a Server-Side Template Injection (SSTI) vulnerability via the formats parameter.