Cross-site Scripting (XSS)

Overview activesupport is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the @htmlunsafe flag used by the SafeBuffer% function. An attacker can inject scripts by providing...

DEBIAN-CVE-2026-33170

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, SafeBuffer% does not propagate the @htmlunsafe flag to the newly created buffer. If a SafeBuffer is mutated in place e.g. via gsub! and th...

CVE-2026-33170 Rails Active Support has a possible XSS vulnerability in SafeBuffer#%

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, SafeBuffer% does not propagate the @htmlunsafe flag to the newly created buffer. If a SafeBuffer is mutated in place e.g. via gsub! and th...

CVE-2026-33170 Rails Active Support has a possible XSS vulnerability in SafeBuffer#%

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, SafeBuffer% does not propagate the @htmlunsafe flag to the newly created buffer. If a SafeBuffer is mutated in place e.g. via gsub! and th...

CVE-2026-33170

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, SafeBuffer% does not propagate the @htmlunsafe flag to the newly created buffer. If a SafeBuffer is mutated in place e.g. via gsub! and th...

CVE-2026-33170

CVE-2026-33170 concerns Active Support (Rails core extensions) where SafeBuffer#% fails to propagate the @html_unsafe flag to a newly created buffer. This can cause in-place mutations (e.g., gsub!) followed by formatting with % using untrusted input to produce a result where html_safe? remains tr...

CVE-2026-33170 Rails Active Support has a possible XSS vulnerability in SafeBuffer#%

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, SafeBuffer% does not propagate the @htmlunsafe flag to the newly created buffer. If a SafeBuffer is mutated in place e.g. via gsub! and th...

EUVD-2026-14624

Rails Active Support has a possible XSS vulnerability in SafeBuffer%...

GHSA-89VF-4333-QX8V Rails Active Support has a possible XSS vulnerability in SafeBuffer#%

Impact SafeBuffer% does not propagate the @htmlunsafe flag to the newly created buffer. If a SafeBuffer is mutated in place e.g. via gsub! and then formatted with % using untrusted arguments, the result incorrectly reports htmlsafe? == true, bypassing ERB auto-escaping and possibly leading to XSS...

EUVD-2017-0294

Malware in sbrugna...

Linux Distros Unpatched Vulnerability : CVE-2023-28120

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input. CVE-2023-28120 Note that Nessus reli...

CVE-2023-28120

There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input...

DEBIAN-CVE-2023-28120

There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input...

UBUNTU-CVE-2023-28120

There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input...

CVE-2023-28120

There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input...

CVE-2023-28120

There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input...

CVE-2023-28120

There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input...

OESA-2024-1797 rubygem-activesupport security update

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing. Security Fixes: A Cross-Site-Scripting vulnerability was found in rubygem ActiveSupport. If the new bytesplice method is...

OESA-2024-1800 rubygem-activesupport security update

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing. Security Fixes: A Cross-Site-Scripting vulnerability was found in rubygem ActiveSupport. If the new bytesplice method is...

OESA-2024-1799 rubygem-activesupport security update

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing. Security Fixes: A Cross-Site-Scripting vulnerability was found in rubygem ActiveSupport. If the new bytesplice method is...