CVE-2026-33658
medium
CVSS v3
6.5
CVSS v2
—
VIR risk
6.5
Description
Rails Active Storage has a possible DoS vulnerability in proxy mode via multi-range requests
Predictions
Exploit likelihood
75%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-33658
Vendor advisory: security-advisories@github.com — https://github.com/rails/rails/security/advisories/GHSA-p9fm-f462-ggrg
Vendor advisory: security-advisories@github.com — https://github.com/rails/rails/releases/tag/v8.1.2.1
Vendor advisory: security-advisories@github.com — https://github.com/rails/rails/releases/tag/v8.0.4.1
Vendor advisory: security-advisories@github.com — https://github.com/rails/rails/releases/tag/v7.2.3.1
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | fixed | 2:7.2.3.1+dfsg-1 |
| debian | sid | fixed | 2:7.2.3.1+dfsg-1 |
| debian | trixie | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| RubyGems | activestorage | <~> 7.2.3, >= 7.2.3.1 | ~> 7.2.3, >= 7.2.3.1 |
| RubyGems | activestorage | >=8.1.0,<8.1.2.1 | 8.1.2.1 |
| RubyGems | activestorage | >=8.0.0,<8.0.4.1 | 8.0.4.1 |
| RubyGems | activestorage | <7.2.3.1 | 7.2.3.1 |
| RUBYGEMS | activestorage | < 7.2.3.1 | 7.2.3.1 |
| RUBYGEMS | activestorage | >= 8.0.0, < 8.0.4.1 | 8.0.4.1 |
| RUBYGEMS | activestorage | >= 8.1.0, < 8.1.2.1 | 8.1.2.1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| rubyonrails | rails | {"endExcluding":"7.2.3.1"} | 7.2.3.1 |
References
- https://github.com/rails/rails/security/advisories/GHSA-p9fm-f462-ggrg
- https://github.com/rails/rails/releases/tag/v7.2.3.1
- https://github.com/rails/rails/releases/tag/v8.0.4.1
- https://github.com/rails/rails/releases/tag/v8.1.2.1
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2026-33658.yml
- https://nvd.nist.gov/vuln/detail/CVE-2026-33658
- https://github.com/rails/rails
- https://security-tracker.debian.org/tracker/CVE-2026-33658
- https://github.com/advisories/GHSA-p9fm-f462-ggrg
CWEs
CWE-770
Verify integrity in audit chain (admin only). AS-IS.