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
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

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%
Action: Routine — remediate on your standard cadence.
EPSS
43.5%
KEV
Not listed

Published

March 24, 2026

Last Modified

July 15, 2026

Advisory Details (10)

Auto-updated Jul 16, 2026
Patch available. Sources: github_commit, github_release, github, redhat.
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
redhat Patch Available

cve-details

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

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

https://github.com/rails/rails/security/advisories/GHSA-9xrj-h377-fr87
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

Affected Packages

(1 across 1 ecosystem)
RubyGems(1)
PackageVulnerable rangeFixed inDependents
activestorage8.1.0, 8.1.0.beta1, 8.1.0.rc1, 8.1.1, 8.1.28.1.2.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 34× 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.

  1. 2026-07-23 03:09 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 02:29 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-18 06:59 UTCOSV refresh
  9. 2026-07-16 17:03 UTCEPSS rescore
  10. 2026-07-16 17:03 UTCEPSS rescore
  11. 2026-07-15 16:57 UTCEPSS rescore
  12. 2026-07-15 16:57 UTCEPSS rescore
  13. 2026-07-15 02:22 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  14. 2026-07-15 02:00 UTCEPSS rescore
  15. 2026-07-15 02:00 UTCEPSS rescore
  16. 2026-07-15 01:21 UTCMITRE cvelistV5CVSS v3 → 8.1 · severity → HIGH
  17. 2026-07-13 22:30 UTCEPSS rescore
  18. 2026-07-13 06:13 UTCEPSS rescore
  19. 2026-07-13 06:13 UTCEPSS rescore
  20. 2026-07-12 05:46 UTCEPSS rescore
  21. 2026-07-11 08:27 UTCEPSS rescore
  22. 2026-07-09 19:10 UTCEPSS rescore
  23. 2026-07-08 15:15 UTCEPSS rescore
  24. 2026-07-07 13:46 UTCEPSS rescore
  25. 2026-07-06 16:27 UTCEPSS rescore
Show 9 more
  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-05 02:30 UTCEPSS rescore
  5. 2026-07-04 06:31 UTCEPSS rescore
  6. 2026-07-01 15:06 UTCEPSS rescore
  7. 2026-06-30 23:22 UTCEPSS rescore
  8. 2026-06-30 04:33 UTCEG score recompute
  9. 2026-06-30 04:32 UTCNVD updatefirst tracked

Related CVEs(same CWE)

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 in the National Vulnerability Database on March 24, 2026, with the most recent update on July 15, 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 43.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33195, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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