CVE-2025-49007
Description
Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.16, there is a denial of service vulnerability in the Content-Disposition parsing component of Rack. This is very similar to the previous security issue CVE-2022-44571. Carefully crafted input can cause Content-Disposition header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is used typically used in multipart parsing. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted. Version 3.1.16 contains a patch for the vulnerability.
Predictions
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 | 3.1.16-0.1 |
| sid | Fixed | 3.1.16-0.1 |
| forky | Fixed | 3.1.16-0.1 |
| bullseye | Fixed | 0 |
| bookworm | Fixed | 0 |
References
- https://github.com/rack/rack/security/advisories/GHSA-47m2-26rw-j2jw
- https://www.suse.com/security/cve/CVE-2025-49007.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-49007
- https://github.com/rack/rack/commit/4795831a0a310c2d31102749e551b38faab6401f
- https://github.com/rack/rack/commit/aed514df37e33907df3c971ed3ca9a0a20ac2901
- https://github.com/rack/rack
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2025-49007.yml
- https://security-tracker.debian.org/tracker/CVE-2025-49007
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.