CVE-2026-33167
low
CVSS v3
—
CVSS v4 NEW
—
VIR risk
2.5
Description
Rails has a possible XSS vulnerability in its Action Pack debug exceptions
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0 |
| sid | Fixed | 0 |
| forky | Fixed | 0 |
| bullseye | Fixed | 0 |
| bookworm | Fixed | 0 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| RubyGems | actionpack | !< 8.1.0||<>= 8.1.2.1 | >= 8.1.2.1 |
| RubyGems | actionpack | >=8.1.0,<8.1.2.1 | 8.1.2.1 |
| RUBYGEMS | actionpack | >= 8.1.0, < 8.1.2.1 | 8.1.2.1 |
References
- https://github.com/rails/rails/security/advisories/GHSA-pgm4-439c-5jp6
- https://www.suse.com/security/cve/CVE-2026-33167.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-33167
- https://github.com/rails/rails/commit/6752711c8c31d79ba50d13af6a6698a3b85415e0
- https://github.com/rails/rails
- https://github.com/rails/rails/releases/tag/v8.1.2.1
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2026-33167.yml
- https://security-tracker.debian.org/tracker/CVE-2026-33167
- https://github.com/advisories/GHSA-pgm4-439c-5jp6
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.