# Rails vulnerabilities

Source: https://junglewise.ai/threats/vendors/rails  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 01:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/rails.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 19 vulnerabilities in Rails: 16 in the last 7 days and 16 in the last 90 days, 4 of them critical and 3 exploited in the wild. The most recent, CVE-2026-126209, was published on 12 November 2026. Nothing was published in the last eight weeks. 3 technologies have a page of their own.

## Counts

- Last 7 days: 16
- Last 30 days: 16
- Last 90 days: 16
- All time: 19 (4 critical, 3 exploited in the wild)

## About Rails

A multinational corporation that designs and manufactures semiconductors and wireless telecommunications products.

## Latest Rails vulnerabilities

- [CVE-2026-126209: Loofah allowed_uri? XSS bypass via numeric character reference](https://junglewise.ai/threats/cve-2026-126209-loofah-is-a-general-library-for-manipulating-and-transforming) (medium, published 12 Nov 2026)
- [CVE-2026-126186: Ruby on Rails Active Storage arbitrary file read and RCE in media processing](https://junglewise.ai/threats/cve-2026-126186-active-storage-possible-arbitrary-file-read-and-remote-code) (high, CVSS 8.8, published 10 Nov 2026)
- [CVE-2026-126085: Ruby on Rails Active Storage content length bypass in Google Cloud Storage uploads](https://junglewise.ai/threats/cve-2026-126085-active-storage-possible-circumvention-of-file-size-limits-in) (medium, CVSS 5.3, published 10 Nov 2026)
- [CVE-2026-126083: Rails Action Pack remote IP spoofing in request handling](https://junglewise.ai/threats/cve-2026-126083-action-pack-is-a-framework-for-handling-and-responding-to-web) (high, CVSS 7.4, published 10 Nov 2026)
- [CVE-2026-126082: Ruby on Rails Active Storage ImageMagick arbitrary file read and write](https://junglewise.ai/threats/cve-2026-126082-active-storage-makes-it-simple-to-upload-and-reference-files-in) (critical, CVSS 9.8, published 10 Nov 2026)
- [CVE-2026-126081: Rails Action Pack mass assignment bypass in Parameters#each_key](https://junglewise.ai/threats/cve-2026-126081-action-pack-is-a-framework-for-handling-and-responding-to-web) (high, CVSS 7.5, published 10 Nov 2026)
- [CVE-2026-126080: Rails Active Support regular expression injection in safe_constantize](https://junglewise.ai/threats/cve-2026-126080-active-support-is-a-collection-of-utility-classes-and-standard) (high, CVSS 7.5, published 10 Nov 2026)
- [CVE-2026-126079: Rails Action View XSS via HTML5 sanitizer in text helpers](https://junglewise.ai/threats/cve-2026-126079-action-view-is-a-framework-for-handling-view-template-lookup-and) (medium, CVSS 6.1, published 10 Nov 2026)
- [CVE-2026-126078: Rails Action View TextHelper highlight XSS](https://junglewise.ai/threats/cve-2026-126078-action-view-is-a-framework-for-handling-view-template-lookup-and) (medium, CVSS 6.1, published 10 Nov 2026)
- [CVE-2026-126077: Rails Action Pack session cookie exposure in cached responses](https://junglewise.ai/threats/cve-2026-126077-action-pack-is-a-framework-for-handling-and-responding-to-web) (medium, CVSS 6.8, published 10 Nov 2026)
- [CVE-2026-126076: Ruby on Rails Action Pack session restoration after logout](https://junglewise.ai/threats/cve-2026-126076-action-pack-is-a-framework-for-handling-and-responding-to-web) (medium, CVSS 4.2, published 10 Nov 2026)
- [CVE-2026-126075: Rails Active Support MessagePack unsafe serialization XSS](https://junglewise.ai/threats/cve-2026-126075-active-support-is-a-collection-of-utility-classes-and-standard) (medium, CVSS 4.7, published 10 Nov 2026)
- [CVE-2026-126074: Rails Active Storage persistent DoS via NUL byte filename](https://junglewise.ai/threats/cve-2026-126074-active-storage-makes-it-simple-to-upload-and-reference-files-in) (medium, CVSS 4.3, published 10 Nov 2026)
- [CVE-2026-126073: Rails Action Pack cache poisoning via content-type negotiation](https://junglewise.ai/threats/cve-2026-126073-action-pack-is-a-framework-for-handling-and-responding-to-web) (medium, CVSS 4.8, published 10 Nov 2026)
- [CVE-2026-126072: Rails Action Pack thread exhaustion in ActionController::Live](https://junglewise.ai/threats/cve-2026-126072-action-pack-is-a-framework-for-handling-and-responding-to-web) (medium, CVSS 5.9, published 10 Nov 2026)
- [CVE-2026-126070: Rails Action View strip_tags XSS in HTML attributes](https://junglewise.ai/threats/cve-2026-126070-action-view-is-a-framework-for-handling-view-template-lookup-and) (medium, CVSS 6.1, published 10 Nov 2026)
- [CVE-2019-5418: Path Traversal in Action View](https://junglewise.ai/threats/cve-2019-5418-ruby-on-rails-path-traversal-in-action-view) (critical, exploited in the wild, CVSS 3.1, published 13 Mar 2019)
- [CVE-2014-0130: actionpack Path Traversal vulnerability](https://junglewise.ai/threats/cve-2014-0130-ruby-on-rails-directory-traversal-vulnerability) (critical, exploited in the wild, CVSS 3.1, published 24 Oct 2017)
- [CVE-2016-0752: Directory traversal vulnerability in Action View in Ruby on Rails](https://junglewise.ai/threats/cve-2016-0752-ruby-on-rails-directory-traversal-vulnerability) (critical, exploited in the wild, CVSS 3, published 24 Oct 2017)

## Most severe Rails vulnerabilities

- [CVE-2019-5418: Path Traversal in Action View](https://junglewise.ai/threats/cve-2019-5418-ruby-on-rails-path-traversal-in-action-view) (critical, exploited in the wild, CVSS 3.1, published 13 Mar 2019)
- [CVE-2014-0130: actionpack Path Traversal vulnerability](https://junglewise.ai/threats/cve-2014-0130-ruby-on-rails-directory-traversal-vulnerability) (critical, exploited in the wild, CVSS 3.1, published 24 Oct 2017)
- [CVE-2016-0752: Directory traversal vulnerability in Action View in Ruby on Rails](https://junglewise.ai/threats/cve-2016-0752-ruby-on-rails-directory-traversal-vulnerability) (critical, exploited in the wild, CVSS 3, published 24 Oct 2017)
- [CVE-2026-126082: Ruby on Rails Active Storage ImageMagick arbitrary file read and write](https://junglewise.ai/threats/cve-2026-126082-active-storage-makes-it-simple-to-upload-and-reference-files-in) (critical, CVSS 9.8, published 10 Nov 2026)
- [CVE-2026-126186: Ruby on Rails Active Storage arbitrary file read and RCE in media processing](https://junglewise.ai/threats/cve-2026-126186-active-storage-possible-arbitrary-file-read-and-remote-code) (high, CVSS 8.8, published 10 Nov 2026)
- [CVE-2026-126081: Rails Action Pack mass assignment bypass in Parameters#each_key](https://junglewise.ai/threats/cve-2026-126081-action-pack-is-a-framework-for-handling-and-responding-to-web) (high, CVSS 7.5, published 10 Nov 2026)
- [CVE-2026-126080: Rails Active Support regular expression injection in safe_constantize](https://junglewise.ai/threats/cve-2026-126080-active-support-is-a-collection-of-utility-classes-and-standard) (high, CVSS 7.5, published 10 Nov 2026)
- [CVE-2026-126083: Rails Action Pack remote IP spoofing in request handling](https://junglewise.ai/threats/cve-2026-126083-action-pack-is-a-framework-for-handling-and-responding-to-web) (high, CVSS 7.4, published 10 Nov 2026)
- [CVE-2026-126077: Rails Action Pack session cookie exposure in cached responses](https://junglewise.ai/threats/cve-2026-126077-action-pack-is-a-framework-for-handling-and-responding-to-web) (medium, CVSS 6.8, published 10 Nov 2026)
- [CVE-2026-126079: Rails Action View XSS via HTML5 sanitizer in text helpers](https://junglewise.ai/threats/cve-2026-126079-action-view-is-a-framework-for-handling-view-template-lookup-and) (medium, CVSS 6.1, published 10 Nov 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 16 | 1 | 0 |

## Rails technologies

- [Rails Action Pack](https://junglewise.ai/threats/technologies/action-pack): 6 vulnerabilities
- [Rails Action View](https://junglewise.ai/threats/technologies/action-view): 3 vulnerabilities
- [Rails Ruby on Rails](https://junglewise.ai/threats/technologies/ruby-on-rails): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Rails vulnerabilities", https://junglewise.ai/threats/vendors/rails, 13 November 2026.