HOMEVULNERABILITIESCVE-2026-33202
CRITICAL

CVE-2026-33202

CWE-74Published: March 24, 2026· Updated: Mar 24, 2026

9.1
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:5.2th

Official Description

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#delete_prefixed` passes blob keys directly to `Dir.glob` without escaping glob metacharacters. If a blob key contains attacker-controlled input or custom-generated keys with glob metacharacters, it may be possible to delete unintended files from the storage directory. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

NVD Source

Technical Analysis

CVE-2026-33202 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected Vendors & Products

rubyonrails1 product
rails
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/rails/rails/commit/8c9676b803820110548cdb7523800db43bc6874c
PATCHhttps://github.com/rails/rails/commit/955284d26e469a9c026a4eee5b21f0414ab0bccf
PATCHhttps://github.com/rails/rails/commit/fa19073546360856e9f4dab221fc2c5d73a45e82
ADVISORYhttps://github.com/rails/rails/security/advisories/GHSA-73f9-jhhh-hr5m

All References (7)

→
https://github.com/rails/rails/commit/8c9676b803820110548cdb7523800db43bc6874cPatch
→
https://github.com/rails/rails/commit/955284d26e469a9c026a4eee5b21f0414ab0bccfPatch
→
https://github.com/rails/rails/commit/fa19073546360856e9f4dab221fc2c5d73a45e82Patch
→
https://github.com/rails/rails/releases/tag/v7.2.3.1Release Notes
→
https://github.com/rails/rails/releases/tag/v8.0.4.1Release Notes
→
https://github.com/rails/rails/releases/tag/v8.1.2.1Release Notes
→
https://github.com/rails/rails/security/advisories/GHSA-73f9-jhhh-hr5mVendor Advisory

Quick Facts

CVE IDCVE-2026-33202
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-74
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMar 24, 2026

Related CVEs (CWE-74)

CVE-2026-5017
9.8
CVE-2026-5334
9.8
CVE-2026-5018
9.8
CVE-2026-34041
9.8
CVE-2026-5035
9.8
CVE-2026-5333
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33202 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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