CVE-2024-26144: Activestorage Rails Has Possible Sensitive Session Vulnerability

MODERATE
Advisory Identifier: GHSA-8h22-8cf7-hq6g
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CVSS 5.3
CWE-200
Published
Advisory Summary

CVE-2024-26144 is a MODERATE (CVSS 5.3) rails has possible sensitive session vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Activestorage libraries in the RubyGems ecosystem. The issue involves rails has possible sensitive session information leak in active storage. Remediation is available by upgrading affected packages to version 6.1.7.7, 7.0.8.1.

CVE-2024-26144 at a Glance

CVE Identifier CVE-2024-26144
GHSA Identifier GHSA-8h22-8cf7-hq6g
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Activestorage
Package Ecosystem RubyGems
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2024-26144

To remediate this vulnerability, upgrade all affected Activestorage dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

activestorage fixed: 6.1.7.7 
Upgrade activestorage to 6.1.7.7
activestorage fixed: 7.0.8.1 
Upgrade activestorage to 7.0.8.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for activestorage

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-26144, inspect your project dependencies for Activestorage:

inspect dependencies for activestorage

Analyze the terminal output to locate any version of Activestorage in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.1.7.7), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Activestorage, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

# Possible Sensitive Session Information Leak in Active Storage There is a possible sensitive session information leak in Active Storage. By default, Active Storage sends a `Set-Cookie` header along with the user's session cookie when serving blobs. It also sets `Cache-Control` to public. Certain proxies may cache the Set-Cookie, leading to an information leak. This vulnerability has been assigned the CVE identifier CVE-2024-26144. Versions Affected: >= 5.2.0, < 7.1.0 Not affected: < 5.2.0, > 7.1.0 Fixed Versions: 7.0.8.1, 6.1.7.7 Impact ------ A proxy which chooses to caches this request can cause users to share sessions. This may include a user receiving an attacker's session or vice versa. This was patched in 7.1.0 but not previously identified as a security vulnerability. All users running an affected release should either upgrade or use one of the workarounds immediately. Releases -------- The fixed releases are available at the normal locations. Workarounds ----------- Upgrade to Rails 7.1.X, or configure caching proxies not to cache the Set-Cookie headers. Credits ------- Thanks to [tyage](https://hackerone.com/tyage) for reporting this!

CVE-2024-26144 Affected Activestorage Versions

2 component(s)
Fixed Versions:
6.1.7.77.0.8.1
Product / Package Ecosystem Affected Versions Fixed Version
activestorage
gem/activestorage
RubyGems
≥ 5.2.0
< 6.1.7.7
6.1.7.7
activestorage
gem/activestorage
RubyGems
≥ 7.0.0
< 7.0.8.1
7.0.8.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/rails/rails/security/advisories/GHSA-8h22-8cf7-hq6g
NVD — CVE-2024-26144 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-26144
Security Fix Commit FIX COMMIT
https://github.com/rails/rails/commit/723f54566023e91060a67b03353e7c03e7436433
Security Fix Commit FIX COMMIT
https://github.com/rails/rails/commit/78fe149509fac5b05e54187aaaef216fbb5fd0d3
discuss.rubyonrails.org/t/possible-sensitiv... WEB
https://discuss.rubyonrails.org/t/possible-sensitive-session-information-leak-in-active-storage/84945
Activestorage Source Repository REPOSITORY
https://github.com/rails/rails
Activestorage Source Repository REPOSITORY
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2024-26144.yml
Activestorage Source Repository REPOSITORY
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2024-26144.yml
Activestorage Security Information SECURITY
https://security.netapp.com/advisory/ntap-20240510-0013

Frequently Asked Questions

What is CVE-2024-26144?
CVE-2024-26144 is a security vulnerability in Activestorage involving Rails has possible Sensitive Session Information Leak in Active Storage under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Activestorage versions are affected?
Affected versions include releases prior to 6.1.7.7, 7.0.8.1 across affected packages: activestorage.
What version fixes CVE-2024-26144?
Upgrading to 6.1.7.7, 7.0.8.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is activestorage affected?
Yes, activestorage is affected in releases prior to 6.1.7.7, 7.0.8.1. Upgrade your dependency to 6.1.7.7, 7.0.8.1 or later.
What is the CVSS score of CVE-2024-26144?
CVE-2024-26144 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2024-26144?
CVE-2024-26144 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check RubyGems dependencies for CVE-2024-26144?
Run the dependency tree command: 'inspect dependencies for activestorage'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-8h22-8cf7-hq6g",
  "modified" : "2025-04-30T17:27:47Z",
  "published" : "2024-02-27T21:41:16Z",
  "aliases" : [ "CVE-2024-26144" ],
  "summary" : "Rails has possible Sensitive Session Information Leak in Active Storage",
  "details" : "# Possible Sensitive Session Information Leak in Active Storage\n\nThere is a possible sensitive session information leak in Active Storage.  By\ndefault, Active Storage sends a `Set-Cookie` header along with the user's\nsession cookie when serving blobs.  It also sets `Cache-Control` to public.\nCertain proxies may cache the Set-Cookie, leading to an information leak.\n\nThis vulnerability has been assigned the CVE identifier CVE-2024-26144.\n\nVersions Affected:  >= 5.2.0, < 7.1.0\nNot affected:       < 5.2.0, > 7.1.0\nFixed Versions:     7.0.8.1, 6.1.7.7\n\nImpact\n------\nA proxy which chooses to caches this request can cause users to share\nsessions. This may include a user receiving an attacker's session or vice\nversa.\n\nThis was patched in 7.1.0 but not previously identified as a security\nvulnerability.\n\nAll users running an affected release should either upgrade or use one of the\nworkarounds immediately.\n\nReleases\n--------\nThe fixed releases are available at the normal locations.\n\nWorkarounds\n-----------\nUpgrade to Rails 7.1.X, or configure caching proxies not to cache the\nSet-Cookie headers.\n\nCredits\n-------\n\nThanks to [tyage](https://hackerone.com/tyage) for reporting this!",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "activestorage"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.2.0"
      }, {
        "fixed" : "6.1.7.7"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "activestorage"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0.0"
      }, {
        "fixed" : "7.0.8.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/rails/rails/security/advisories/GHSA-8h22-8cf7-hq6g"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-26144"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rails/rails/commit/723f54566023e91060a67b03353e7c03e7436433"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rails/rails/commit/78fe149509fac5b05e54187aaaef216fbb5fd0d3"
  }, {
    "type" : "WEB",
    "url" : "https://discuss.rubyonrails.org/t/possible-sensitive-session-information-leak-in-active-storage/84945"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rails/rails"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2024-26144.yml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2024-26144.yml"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20240510-0013"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-02-27T21:41:16Z",
    "nvd_published_at" : "2024-02-27T16:15:46Z"
  }
}