CVE-2026-33195

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 56% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
EPSS PROB
0.6%
EPSS %ILE
45th
KEV
Not listed

Published

March 24, 2026

Last Modified

August 19, 2026

Advisory Details (10)

Auto-updated Oct 7, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

8.1.2.1

Patch available: rails/rails v8.1.2.1

https://github.com/rails/rails/releases/tag/v8.1.2.1
github_release Patch Available

8.0.4.1

Patch available: rails/rails v8.0.4.1

https://github.com/rails/rails/releases/tag/v8.0.4.1
github_release Patch Available

7.2.3.1

Patch available: rails/rails v7.2.3.1

https://github.com/rails/rails/releases/tag/v7.2.3.1
github_commit

commit a290c8a1ec18 (rails/rails)

Fix landed in rails/rails commit a290c8a1ec18 — awaiting tagged release

https://github.com/rails/rails/commit/a290c8a1ec189d793aa6d7f2570b6a763f675348
github_commit

commit 9b06fbc0f504 (rails/rails)

Fix landed in rails/rails commit 9b06fbc0f504 — awaiting tagged release

https://github.com/rails/rails/commit/9b06fbc0f504b8afe333f33d19548f3b85fbe655
github_commit

commit 4933c1e3b8c1 (rails/rails)

Fix landed in rails/rails commit 4933c1e3b8c1 — awaiting tagged release

https://github.com/rails/rails/commit/4933c1e3b8c1bb04925d60347be9f69270392f2c
githubMentions a patch (unverified)

Possible path traversal in Active Storage DiskService · Advisory · rails/rails · GitHub

https://github.com/rails/rails/security/advisories/GHSA-9xrj-h377-fr87
redhat
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33195.json
redhat

2450546 – (CVE-2026-33195) CVE-2026-33195 Rails: Active Storage: Active Storage (Rails): Arbitrary file access via path traversal in blob keys

https://bugzilla.redhat.com/show_bug.cgi?id=2450546
redhatMentions a patch (unverified)

CVE-2026-33195 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-33195

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
rails2:6.0.3.7+dfsg-2 ... 2:7.2.3.2+dfsg-2 (72 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
rails2:6.1.7.10+dfsg-1~deb12u1 ... 2:7.2.3.2+dfsg-3 (39 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rails2:7.2.2.1+dfsg-7 ... 2:7.2.3.2+dfsg-3 (11 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
rails2:7.2.2.1+dfsg-7 ... 2:7.2.3+dfsg-3 (7 versions)
  • every version up to 2:7.2.3.1+dfsg-1: fixed in 2:7.2.3.1+dfsg-1
—
RubyGems(1)
PackageVulnerable rangeFix by version rangeDependents
activestorage0.1 ... 7.2.3 (161 versions)
  • 8.1.0.beta1 up to 8.1.2.1: fixed in 8.1.2.1
  • 8.0.0.beta1 up to 8.0.4.1: fixed in 8.0.4.1
  • every version up to 7.2.3.1: fixed in 7.2.3.1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 123 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
  3. 2026-10-08 17:12 UTCEPSS rescore
  4. 2026-10-07 23:47 UTCEPSS rescore
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  15. 2026-09-25 09:36 UTCOSV refresh
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  1. 2026-09-10 09:34 UTCEPSS rescore
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  6. 2026-09-06 01:25 UTCOSV refresh
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  25. 2026-08-18 13:48 UTCEPSS rescore
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  28. 2026-08-16 10:43 UTCEG score recompute
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  38. 2026-08-09 17:27 UTCEG score recompute
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  40. 2026-08-09 06:31 UTCEG score recompute
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  42. 2026-08-07 16:53 UTCEG score recompute
  43. 2026-08-06 19:09 UTCEG score recompute
  44. 2026-08-06 13:46 UTCEPSS rescore
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  46. 2026-08-05 19:17 UTCEPSS rescore
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  48. 2026-08-04 10:38 UTCEPSS rescore
  49. 2026-08-03 23:59 UTCEG score recompute
  50. 2026-08-03 10:36 UTCEPSS rescore
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  65. 2026-07-23 03:09 UTCEG score recompute
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  68. 2026-07-20 17:08 UTCEPSS rescore
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  72. 2026-07-18 06:59 UTCOSV refresh
  73. 2026-07-16 17:03 UTCEPSS rescore
  74. 2026-07-16 17:03 UTCEPSS rescore
  75. 2026-07-15 16:57 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-33195?
CVE-2026-33195 is a critical vulnerability published on March 24, 2026. 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…
When was CVE-2026-33195 disclosed?
CVE-2026-33195 was first published on March 24, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-33195 actively exploited?
CVE-2026-33195 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-33195?
CVE-2026-33195 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-33195?
A fix for CVE-2026-33195 is available: update to the fixed version the vendor names in its advisory.

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