Oj - Stack Buffer Overflow in Oj::Doc#each_child via Deeply Nested Input

Summary Oj::Doceachchild, when invoked recursively over a deeply nested JSON document, overflows a fixed-size stack buffer and aborts the process. This is a denial of service reachable from untrusted JSON. Impact Reliable denial of service: any endpoint that calls Oj::Doc.openuntrusted |d|...

Oj - intern.c form_attr (uninitialized stack read)

Summary Oj.load in :object mode reads uninitialized stack memory and, for long keys, reads out of bounds when parsing a JSON object whose key is 254 bytes or longer. The interned bytes can surface to the caller, disclosing process stack memory. Impact Information disclosure of process stack memor...

Avo - Missing Authorization in Avo Association Attach Endpoint Allows Unauthorized Relationship Manipulation and Privilege Escalation

Summary A critical missing authorization flaw exists in Avo's association attach workflow. The UI and GET /resources/:resource/:id/:related/new path can check attach?, but the actual write endpoint, POST /resources/:resource/:id/:related, does not run the same authorization check before mutating...

SSRF and Local File Disclosure in `CssParser::Parser#read_remote_file`

Summary CssParser::Parserreadremotefile and therefore loaduri!, and the @import-following branch of addblock! issues HTTP/HTTPS requests against any host, port and URI it is handed, with no scheme allowlist, no host / IP filtering, and no protection against link-local, loopback or RFC‑1918...

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

Unverified certifier signatures persisted by acquirecertificate Affected packages Both bsv-sdk and bsv-wallet are published from the sgbett/bsv-ruby-sdk repository. The vulnerable code lives in lib/bsv/walletinterface/walletclient.rb, which is physically shipped inside both gems the...

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

Unverified certifier signatures persisted by acquirecertificate Affected packages Both bsv-sdk and bsv-wallet are published from the sgbett/bsv-ruby-sdk repository. The vulnerable code lives in lib/bsv/walletinterface/walletclient.rb, which is physically shipped inside both gems the...

MCP Ruby SDK - Insufficient Session Binding Allows SSE Stream Hijacking via Session ID Replay

Summary 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 Server-Sent Events SSE stream and intercept all real-time data. Details Root Cause The StreamableHTTPTransport...

Ruby LSP has arbitrary code execution through branch setting

Summary The rubyLsp.branch VS Code workspace setting was interpolated without sanitization into a generated Gemfile, allowing arbitrary Ruby code execution when a user opens a project containing a malicious .vscode/settings.json. Other editors that support workspace setting that get automatically...

Avo has a XSS vulnerability on `return_to` param

Description A reflected cross-site scripting XSS vulnerability exists in the returnto query parameter used in the avo interface. An attacker can craft a malicious URL that injects arbitrary JavaScript, which is executed when he clicks a dynamically generated navigation button. Impact This...

openc3-api Vulnerable to Unauthenticated Remote Code Execution

Summary OpenC3 COSMOS contains a critical remote code execution vulnerability reachable through the JSON-RPC API. When a JSON-RPC request uses the string form of certain APIs, attacker-controlled parameter text is parsed into values using Stringconverttovalue. For array-like inputs, converttovalu...

ruby-jwt < v3.0.0.beta1 was discovered to contain weak encryption

ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective is "keysize is not something that is enforced by this library. Currently more recent versions of OpenSSL are enforcing some key sizes and those restrictions apply to the users of this gem also."...

CKEditor4 low-risk cross-site scripting (XSS) vulnerability linked to potential domain takeover

Affected Packages The issue impacts only editor instances with enabled version notifications. Please note that this feature is disabled by default in all CKEditor 4 LTS versions. Therefore, if you use CKEditor 4 LTS, it is highly unlikely that you are affected by this vulnerability. If you are...

CKEditor4 Cross-site Scripting vulnerability caused by incorrect CDATA detection

Affected packages The vulnerability has been discovered in the core HTML parsing module and may affect all editor instances that: Enabled full-page editing mode, or enabled CDATA elements in Advanced Content Filtering configuration defaults to script and style elements. Impact A potential...

Cross Site Scripting (XSS) Vulnerability in Fetlife rollout-ui gem v0.5

Cross Site Scripting XSS Vulnerability in Fetlife rollout-ui version 0.5, allows attackers to execute arbitrary code via a crafted url to the delete a feature functionality...

Cross-site Scripting in CKEditor4

Affected packages The vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4. Impact A potential vulnerability has been discovered in CKEditor 4 HTML processing core module. The vulnerability allowed to inject malformed HTML bypassing...

Clipboard feature vulnerability allowing to inject arbitrary HTML into the editor using paste functionality

Affected packages The vulnerability has been discovered in clipboard plugin. All plugins with clipboard plugin dependency are affected: clipboard pastetext pastetools widget uploadwidget autolink tableselection Impact A potential vulnerability has been discovered in CKEditor 4 Clipboard package...

Regular expression Denial of Service in dialog plugin

Affected packages The vulnerability has been discovered and fixed in the dialog plugin. Packages indirectly affected by the issue having dialog plugin dependency: - Link - Image - Enhanced Image - Code Snippet - Iframe Dialog Impact A potential vulnerability has been discovered in CKEditor 4 dial...

Prototype Pollution in lodash

Versions of lodash before 4.17.11 are vulnerable to prototype pollution. The vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of Object via constructor: prototype: ... causing the addition or modification of an existing propert...

Ruby 2.1 has exploitable heap overflow vulnerability

An exploitable heap overflow vulnerability exists in the Fiddle::Function.new "initialize" function functionality of Ruby. In Fiddle::Function.new "initialize" heap buffer "argtypes" allocation is made based on args array length. Specially constructed object passed as element of args array can...

Security Bypass Vulnerability with Ruby

The Ruby language has a security mechanism security model that can restrict operations on untrusted objects. This security model is based on mechanisms called "object taint" and "safe level." A vulnerability has been confirmed that allows arbitrary script execution by bypassing the "safe level"...

Decidim - Forms admin question editor lacks authorization

Description A participant can load the demographics questionnaire admin editor and make changes. Impact - Low-privilege users can access questionnaire-admin interfaces. - They can read question-management surfaces that should remain limited to questionnaire managers. Credits This issue was...

JSON generator heap buffer overflow when streaming to an IO

Ruby JSON is a JSON implementation for Ruby. Versions 2.9.0 through 2.19.8 are vulnerable to heap buffer overflow when the JSON generator is provided with an oversized streamed object. When streaming to an IO JSON.dumpobj, io and JSON::Stategenerateobj, io can write past the internal JSON generat...

Fluentd is Vulnerable to Remote Code Execution (RCE) via Arbitrary File Write in `${tag}` Placeholder

Fluentd allows dynamically constructing file paths using the $tag placeholder. It was discovered that validation for this placeholder was insufficient. If a Fluentd instance is configured to receive logs from untrusted sources and uses the $tag placeholder in file configurations such as the path...

fluent-plugin-s3 Vulnerable to Denial of Service (DoS) via Decompression Bomb in `in_s3`

"The fluent-plugin-s3 plugin specifically the ins3 input plugin supports reading and decompressing heavily compressed files such as gzip, lzma2, and lzop from Amazon S3. It was discovered that the plugin read the entire decompressed payload into memory at once without enforcing a strict size limi...

Oj - Use-After-Free in 'Oj::Parser' SAJ Long Key Callback

Summary Oj::Parser in SAJ mode does not protect cached object keys ≥ 35 bytes from garbage collection. A Ruby callback that triggers GC inside hashend can cause the key string to be reclaimed while the C parser still holds a pointer to it. The subsequent access to the freed string VALUE results i...

Oj - Negative-Size memcpy in 'Oj::Parser' create_id Attribute Handling

Summary Oj::Parserparse in usual mode with createid enabled is vulnerable to heap corruption via a negative-size memcpy. When a JSON object key is exactly 65,535 bytes long, an integer truncation in formattr usual.c:63 converts the length to -1 before passing it to memcpy. This causes memcpy to...

Oj- Use-After-Free in 'Oj::Parser' array_class/hash_class GC Marking

Summary Oj::Parser in usual mode does not mark arrayclass and hashclass references during garbage collection. If GC runs after the class is assigned but before a parse, the class object is reclaimed, leaving the parser holding a dangling VALUE. The subsequent parse call dereferences the freed...

Use-After-Free When Redefining SQLite Functions with Different Arity

Summary Using Databasecreatefunction or Databasedefinefunction to define the same function name more than once with different numbers of arguments "arity" or text encodings will result in a invalid memory read and a segmentation fault. Severity The sqlite3-ruby repo maintainers assess this as Low...

Use-After-Free in SQLite Aggregate Function Callbacks

Summary Using Databasecreateaggregate, createaggregatehandler, or Databasedefineaggregator to define an aggregate function, and then using an open statement calling that function after the database has been explicitly closed will result in an invalid memory read and a segmentation fault. Severity...

Direct attachment upload endpoint lacks upload authorization and bypasses field-level upload policy

Summary Avo's direct attachment upload endpoint lacks server-side upload authorization and bypasses the documented field-level upload policy methods such as uploadFIELDID?. An authenticated Avo user who can reach the Avo attachment upload endpoint can replace or add attachment content, including...

Decidim amendments can be accepted or rejected by anyone

Impact The vulnerability allows any registered and authenticated user to accept or reject any amendments. The impact is on any users who have created proposals where the amendments feature is enabled. This also elevates the user accepting the amendment as the author of the original proposal as...

Rails Active Storage has a possible DoS vulnerability in proxy mode via multi-range requests

Impact Active Storage’s proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate CPU usage compared to a normal request for the same file, possibly resulting in a DoS vulnerability...

Out-of-bounds write vulnerability

A weakness has been identified in mruby 3.4.0. This vulnerability affects the function aryfillexec of the file mrbgems/mruby-array-ext/src/array.c. Executing manipulation of the argument start/length can lead to out-of-bounds write. The attack needs to be launched locally. The exploit has been ma...

CKEditor4 Cross-site Scripting vulnerability in samples with enabled the preview feature

Affected packages The vulnerability has been discovered in the samples that use the preview feature: samples/old//.html plugins/plugin name/samples//.html All integrators that use these samples in the production code can be affected. Impact A potential vulnerability has been discovered in one of...

Improper Neutralization of Input During Web Page Generation in CKEditor4

A cross-site scripting XSS vulnerability in the Color Dialog plugin for CKEditor 4.15.0 allows remote attackers to run arbitrary web script after persuading a user to copy and paste crafted HTML code into one of editor inputs...

HTML comments vulnerability allowing to execute JavaScript code

Affected packages The vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4. Impact A potential vulnerability has been discovered in CKEditor 4 HTML processing core module. The vulnerability allowed to inject malformed comments HTML...

Widget feature vulnerability allowing to execute JavaScript code using undo functionality

Affected packages The vulnerability has been discovered in Widget plugin if used alongside Undo feature. Impact A potential vulnerability has been discovered in CKEditor 4 Widget package. The vulnerability allowed to abuse undo functionality using malformed widget HTML, which could result in...

Trusting FTP PASV responses vulnerability in Net::FTP

A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed e.g., the attacker can conduct port scans and service banner...

Command Injection in lodash

lodash versions prior to 4.17.21 are vulnerable to Command Injection via the template function...

Regular Expression Denial of Service (ReDoS) in lodash

lodash prior to 4.7.11 is affected by: CWE-400: Uncontrolled Resource Consumption. The impact is: Denial of service. The component is: Date handler. The attack vector is: Attacker provides very long strings, which the library attempts to match using a regular expression. The fixed version is:...

Prototype Pollution in lodash

Versions of lodash before 4.17.12 are vulnerable to Prototype Pollution. The function defaultsDeep allows a malicious user to modify the prototype of Object via constructor: prototype: ... causing the addition or modification of an existing property that will exist on all objects. Recommendation...

Prototype Pollution in lodash

Versions of lodash before 4.17.5 are vulnerable to prototype pollution. The vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of Object via proto causing the addition or modification of an existing property that will exist on al...

HTTP response splitting attack in WEBrick

Allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick...

Type confusion exists in _cancel_eval Ruby's TclTkIp class

Type confusion exists in canceleval Ruby's TclTkIp class method. Attacker passing different type of object than String as "retval" argument can cause arbitrary code execution...

Data-type injection vulnerability

The Active Record component in Ruby on Rails 2.3.x, 3.0.x, 3.1.x, and 3.2.x does not ensure that the declared data type of a database column is used during comparisons of input values to stored values in that column, which makes it easier for remote attackers to conduct data-type injection attack...

Remote Command Execution in Spree search functionality

Spree versions prior to 0.60.2 contain a remote command execution vulnerability in the search functionality. The application fails to properly sanitize input passed via the search:send parameter, which is dynamically invoked using Ruby’s send method. This allows attackers to execute arbitrary she...

Remote Command Execution in Spree search functionality

Spree versions prior to 0.60.2 contain a remote command execution vulnerability in the search functionality. The application fails to properly sanitize input passed via the search:send parameter, which is dynamically invoked using Ruby’s send method. This allows attackers to execute arbitrary she...

Directory traversal vulnerability in WEBrick

Directory traversal vulnerability in WEBrick when running on systems that support backslash path separators or case-insensitive file names, allows remote attackers to access arbitrary files via 1 "..%5c" encoded backslash sequences or 2 filenames that match patterns in the :NondisclosureName opti...

Decidim - JWT-backed authentication can be replayed across organizations

Description A JWT issued to an Org 1 account is accepted on the Org 2 API and can read the admin-only GraphQL participantDetails field for an Org 2 participant. The same trust-boundary problem also affects API-user authentication: an Org 1 API user can use a JWT on the Org 1 host and replay that...

ruby webrick through v1.9.2 WEBrick reparses trailer

ruby webrick through v1.9.2 WEBrick reparses trailer Content-Length into canonical request state, enabling request smuggling...