CVE-2026-33195 (GCVE-0-2026-33195)

Vulnerability from cvelistv5 – Published: 2026-03-23 23:31 – Updated: 2026-06-30 12:07
VLAI
Title
Rails Active Storage has possible Path Traversal in DiskService
Summary
Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage's `DiskService#path_for` does not validate that the resolved filesystem path remains within the storage root directory. If a blob key containing path traversal sequences (e.g. `../`) is used, it could allow reading, writing, or deleting arbitrary files on the server. Blob keys are expected to be trusted strings, but some applications could be passing user input as keys and would be affected. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
Severity
8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
rails activestorage Affected: >= 8.1.0.beta1, < 8.1.2.1
Affected: >= 8.0.0.beta1, < 8.0.4.1
Affected: < 7.2.3.1
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Red Hat Red Hat 3scale API Management Platform 2     cpe:/a:redhat:red_hat_3scale_amp:2
 Create a notification for this product.
Show details on NVD website
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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-33195\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-24T14:10:57.987917Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-24T14:11:13.687Z\"}}], \"cna\": {\"title\": \"Rails Active Storage has possible Path Traversal in DiskService\", \"source\": {\"advisory\": \"GHSA-9xrj-h377-fr87\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"rails\", \"product\": \"activestorage\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 8.1.0.beta1, \u003c 8.1.2.1\"}, {\"status\": \"affected\", \"version\": \"\u003e= 8.0.0.beta1, \u003c 8.0.4.1\"}, {\"status\": \"affected\", \"version\": \"\u003c 7.2.3.1\"}]}], \"references\": [{\"url\": \"https://github.com/rails/rails/security/advisories/GHSA-9xrj-h377-fr87\", \"name\": \"https://github.com/rails/rails/security/advisories/GHSA-9xrj-h377-fr87\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/rails/rails/commit/4933c1e3b8c1bb04925d60347be9f69270392f2c\", \"name\": \"https://github.com/rails/rails/commit/4933c1e3b8c1bb04925d60347be9f69270392f2c\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/rails/rails/commit/9b06fbc0f504b8afe333f33d19548f3b85fbe655\", \"name\": \"https://github.com/rails/rails/commit/9b06fbc0f504b8afe333f33d19548f3b85fbe655\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/rails/rails/commit/a290c8a1ec189d793aa6d7f2570b6a763f675348\", \"name\": \"https://github.com/rails/rails/commit/a290c8a1ec189d793aa6d7f2570b6a763f675348\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/rails/rails/releases/tag/v7.2.3.1\", \"name\": \"https://github.com/rails/rails/releases/tag/v7.2.3.1\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/rails/rails/releases/tag/v8.0.4.1\", \"name\": \"https://github.com/rails/rails/releases/tag/v8.0.4.1\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/rails/rails/releases/tag/v8.1.2.1\", \"name\": \"https://github.com/rails/rails/releases/tag/v8.1.2.1\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage\u0027s `DiskService#path_for` does not validate that the resolved filesystem path remains within the storage root directory. If a blob key containing path traversal sequences (e.g. `../`) is used, it could allow reading, writing, or deleting arbitrary files on the server. Blob keys are expected to be trusted strings, but some applications could be passing user input as keys and would be affected. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-22\", \"description\": \"CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-03-23T23:31:41.785Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-33195\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-25T03:56:06.239Z\", \"dateReserved\": \"2026-03-17T22:16:36.721Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-03-23T23:31:41.785Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.