CVE catalog
CVE-2024-39316
ruby-rack: CVE-2024-39316
- Severity
- Low
- Source
- [NVD] · [CVE record]
- EPSS
- 0.86% · Oct 25, 2026
Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.5, Regular Expression Denial of Service (ReDoS) vulnerability exists in the `Rack::Request::Helpers` module when parsing HTTP Accept headers. This vulnerability can be exploited by an attacker sending specially crafted `Accept-Encoding` or `Accept-Language` headers, causing the server to spend excessive time processing the request and leading to a Denial of Service (DoS). The fix for CVE-2024-26146 was not applied to the main branch and thus while the issue was fixed for the Rack v3.0 release series, it was not fixed in the v3.1 release series until v3.1.5. Users of versions on the 3.1 branch should upgrade to version 3.1.5 to receive the fix.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ruby-rack | sid | 3.2.7-1 | not affected |
| Debian | ruby-rack | forky | 3.2.7-1 | not affected |
| Debian | ruby-rack | trixie | 3.1.20-0+deb13u1 | not affected |
| Debian | ruby-rack | trixie-security | 3.1.20-0+deb13u2 | not affected |
| Debian | ruby-rack | bookworm | 2.2.22-0+deb12u1 | not affected |
| Debian | ruby-rack | bookworm-security | 2.2.22-0+deb12u2 | not affected |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ruby-rack | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | ruby-rack | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | ruby-rack | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | ruby-rack | source | bookworm | Not affected | unimportant | Not reported | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.