CVE-2026-41316

ERB is a templating system for Ruby. Ruby 2.7.0 before ERB 2.2.0 was published on rubygems.org introduced an @init instance variable guard in ERBresult and ERBrun to prevent code execution when an ERB object is reconstructed via Marshal.load deserialization. However, three other public methods th...

Linux Distros Unpatched Vulnerability : CVE-2026-41316

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ERB is a templating system for Ruby. Ruby 2.7.0 before ERB 2.2.0 was published on rubygems.org introduced an @init instance variable guard in ERBresult and ERBr...

CLSA-2026-1776952176 ruby: Fix of 4 CVEs

CVE-2024-39908: fix ReDoS in REXML parser for repeated / character reference payloads - CVE-2024-41123: fix ReDoS in REXML source.match when no terminator string is specified - CVE-2024-41946: add XML entity expansion limit to REXML SAX and pull parsers - CVE-2024-43398: fix DoS via deep elements...

OPENSUSE-SU-2026:10609-1 libruby4_0-4_0-4.0.3-1.1 on GA media

These are all security issues fixed in the libruby40-40-4.0.3-1.1 package on the GA media of openSUSE Tumbleweed...

OPENSUSE-SU-2026:10604-1 ruby4.0-rubygem-rack-session-2.1.2-1.1 on GA media

These are all security issues fixed in the ruby4.0-rubygem-rack-session-2.1.2-1.1 package on the GA media of openSUSE Tumbleweed...

ERB has an @_init deserialization guard bypass via def_module / def_method / def_class

ERB implements an @init guard to prevent code execution when ERB objects are reconstructed via Marshal.load on untrusted data. However, ERBdefmethod, ERBdefmodule, and ERBdefclass evaluate the template source without checking this guard, allowing an attacker who controls the data passed to...

USN-8190-1 ruby-rack-session vulnerability

SeungMyung Lee discovered that Rack::Session did not properly reject cookies upon decryption failure. A remote attacker could use this issue to manipulate session contents and possibly gain unauthorized access...

Debian dla-4407 : ruby-sidekiq - security update

The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4407 advisory. - ----------------------------------------------------------------------- Debian LTS Advisory DLA-4407-1 [email protected]...

ruby: dlopen could open a library with tainted library name

The Fiddle::Handle implementation in ext/fiddle/handle.c in Ruby before 2.0.0-p648, 2.1 before 2.1.8, and 2.2 before 2.2.4, as distributed in Apple OS X before 10.11.4 and other products, mishandles tainting, which allows context-dependent attackers to execute arbitrary code or cause a denial of...

ruby: Integer overflows in rb_ary_store()

Multiple integer overflows in the rbarystore function in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, and 1.8.7 before 1.8.7-p22 allow context-dependent attackers to execute arbitrary code or cause a denial of service via unknown vectors, a different issue than...

ruby: ReDoS vulnerability in Time

A flaw was found in the Time gem and Time library of Ruby. The Time parser mishandles invalid strings with specific characters and causes an increase in execution time for parsing strings to Time objects. This issue may result in a Regular expression denial of service ReDoS...

ruby: Unintentional directory traversal by poisoned NULL byte in Dir

It was found that the methods from the Dir class did not properly handle strings containing the NULL byte. An attacker, able to inject NULL bytes in a path, could possibly trigger an unspecified behavior of the ruby script...

ruby: Integer overflows in rb_str_buf_append()

Multiple integer overflows in the rbstrbufappend function in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, 1.8.7 before 1.8.7-p22, and 1.9.0 before 1.9.0-2 allow context-dependent attackers to execute arbitrary code or cause a denial of service via unknown vectors that...

ruby: Properly initialize the random number generator when forking new process

Ruby before 1.8.6-p114 does not reset the random seed upon forking, which makes it easier for context-dependent attackers to predict the values of random numbers by leveraging knowledge of the number sequence obtained in a different child process, a related issue to CVE-2003-0900...

ruby: Unsafe use of alloca in rb_str_format()

The rbstrformat function in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, 1.8.7 before 1.8.7-p22, and 1.9.0 before 1.9.0-2 allows context-dependent attackers to trigger memory corruption via unspecified vectors related to alloca, a different issue than CVE-2008-2662,...

ruby: memory corruption in BigDecimal on 64bit platforms

The VpMemAlloc function in bigdecimal.c in the BigDecimal class in Ruby 1.9.2-p136 and earlier, as used on Apple Mac OS X before 10.6.7 and other platforms, does not properly allocate memory, which allows context-dependent attackers to execute arbitrary code or cause a denial of service applicati...

ruby: use of predictable source port and transaction id in DNS requests done by resolv.rb module

resolv.rb in Ruby 1.8.5 and earlier, 1.8.6 before 1.8.6-p287, 1.8.7 before 1.8.7-p72, and 1.9 r18423 and earlier uses sequential transaction IDs and constant source ports for DNS requests, which makes it easier for remote attackers to spoof DNS responses, a different vulnerability than...

ruby: SMTP command injection via CRLF sequences in RCPT TO or MAIL FROM commands in Net::SMTP

A SMTP command injection flaw was found in the way Ruby's Net::SMTP module handled CRLF sequences in certain SMTP commands. An attacker could potentially use this flaw to inject SMTP commands in a SMTP session in order to facilitate phishing attacks or spam campaigns...

ruby: missing "taintness" checks in dl module

The dl module in Ruby 1.8.5 and earlier, 1.8.6 through 1.8.6-p286, 1.8.7 through 1.8.7-p71, and 1.9 through r18423 does not check "taintness" of inputs, which allows context-dependent attackers to bypass safe levels and execute dangerous functions by accessing a library using DL.dlopen...

ruby: Potential HTTP request smuggling in WEBrick

An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy which also has a po...