Home/CVE/In actionpack gem >= 6.0.0, a possible XSS vulnerability exists when an application is running in development mode allow
CVE

CVE-2020-8264

In actionpack gem >= 6.0.0, a possible XSS vulnerability exists when an application is running in development mode allow

In actionpack gem >= 6.0.0, a possible XSS vulnerability exists when an application is running in development mode allowing an attacker to send or embed (in another page) a specially crafted URL which can allow the attacker to execute JavaScript in the context of the local application. This vulnerability is in the Actionable Exceptions middleware.

MEDIUM · CVSS 6.1 EPSS 0.0205
Schedule remediation
  • Public exploit or PoC is available
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

1
rubyonrails rails>= 6.0.0 and < 6.0.3.4
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems actionpack MODERATE fixed in 6.0.3.4
⚠

Public Exploits & PoCs

1
pochackerone.com · 904059hackerone.com
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumRuby on Rails Framework Exceptions
▣

Scoring & Timeline

6.1
MEDIUM · CVSS v3.1 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Jan 2021 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
⚑

Vendor Advisories

26
suse-csafopenSUSE-SU-2024:11313-1
suse-csafopenSUSE-SU-2024:11314-1
suse-csafopenSUSE-SU-2024:11316-1
suse-csafopenSUSE-SU-2024:11318-1
suse-csafopenSUSE-SU-2024:11319-1
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://groups.google.com/g/rubyonrails-security/c/yQzUVfv42jk/m/oJWw-xhNAQAJMailing ListThird Party Advisory
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