Description
Sinatra is a domain-specific language for creating web applications in Ruby. An issue was discovered in Sinatra 2.0 before 2.2.3 and 3.0 before 3.0.4. An application is vulnerable to a reflected file download (RFD) attack that sets the Content-Disposition header of a response when the filename is derived from user-supplied input. Version 2.2.3 and 3.0.4 contain patches for this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| sinatra | sinatra | >= 3.0, < 3.0.4, >= 2.0, < 2.2.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ruby-sinatra | 3.0.5-2 | — |
| Debian 13 | ruby-sinatra | 3.0.5-2 | — |
| Debian 12 | ruby-sinatra | 3.0.5-2 | — |
| Debian 11 | ruby-sinatra | 2.0.8.1-2+deb11u1 | DLA-3877-1 |
| Debian 10 | ruby-sinatra | 2.0.5-4+deb10u2 | DLA-3264-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | ruby-sinatra | 2.0.8.1-2+deb11u1build0.22.04.1 | USN-7664-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | ruby-sinatra | 2.0.8.1-1ubuntu0.1~esm2 | USN-7664-1 |
| Ubuntu Pro 18.04 LTS | ruby-sinatra | 1.4.8-1ubuntu0.1~esm2 | USN-7664-1 |
| Ubuntu Pro 16.04 LTS | ruby-sinatra | 1.4.7-3ubuntu0.1~esm2 | USN-7664-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | pcs +1 | 0.11.3-4.el9_1.2 | RHSA-2023:0974 |
| RHEL 8 | pcs +1 | 0.10.14-5.el8_7.2 | RHSA-2023:0855 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | pcs +1 | 0.11.1-10.el9_0.3 | RHSA-2023:0527 |
| RHEL 8.6 EUS | pcs +1 | 0.10.12-6.el8_6.3 | RHSA-2023:0427 |
| RHEL 8.4 EUS | pcs +1 | 0.10.8-1.el8_4.3 | RHSA-2023:0506 |
| RHEL 8.2 TUS | pcs +1 | 0.10.4-6.el8_2.4 | RHSA-2023:0393 |
| RHEL 8.2 E4S | pcs +1 | 0.10.4-6.el8_2.4 | RHSA-2023:0393 |
| RHEL 8.1 E4S | pcs +1 | 0.10.2-4.el8_1.3 | RHSA-2023:0857 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | pcs +1 | 0.11.3-4.el9_1.2 | ALSA-2023:0974 |
| AlmaLinux 8 | pcs +1 | 0.10.14-5.el8_7.2.alma | ALSA-2023:0855 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | pcs | 0.10.14-5.el8_7.2 | RLSA-2023:0855 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | pcs +1 | 0.11.3-4.el9_1.2 | ELSA-2023-12150 |
| Oracle Linux 8 | pcs +1 | 0.10.14-5.0.1.el8_7.2 | ELSA-2023-12137 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
boost-legal/refile ★ 0 · Jun 30, 2026
Private fork of refile/refile (pinned at c4ac577c) with sinatra ceiling raised to < 4.0 for CVE-2022-45442. See sc-47428.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| RubyGems | sinatra | >= 3.0, < 3.0.4 | 3.0.4 | GHSA-2x8x-jmrp-phxw |
| RubyGems | sinatra | >= 2.0.0, < 2.2.3 | 2.2.3 | GHSA-2x8x-jmrp-phxw |
Advisories 16
- ALSA-2023:0974 Moderate: pcs security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:0855 Moderate: pcs security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:0974 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:0857 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:0855 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:0527 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:0506 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:0427 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:0393 Red Hat Security Advisory: pcs security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-7664-1 ruby-sinatra vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-3264-1 ruby-sinatra - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3877-1 ruby-sinatra - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:0855 Moderate: pcs security update Rocky Linux Security Advisories · Feb 5, 2026
- WID-SEC-2023-0186 Red Hat Enterprise Linux: Mehrere Schwachstellen ermöglichen Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Jul 22, 2025
- ELSA-2023-12150 Moderate: pcs security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Mar 1, 2023
- ELSA-2023-12137 Moderate: pcs security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 22, 2023
References
- https://github.com/sinatra/sinatra/security/advisories/GHSA-2x8x-jmrp-phxw
- https://github.com/sinatra/sinatra/commit/ea8fc9495a350f7551b39e3025bfcd06f49f363b
- https://github.com/advisories/GHSA-8x94-hmjh-97hq
- https://www.blackhat.com/docs/eu-14/materials/eu-14-Hafif-Reflected-File-Download-A-New-Web-Attack-Vector.pdf
- [debian-lts-announce] 20230110 [SECURITY] [DLA 3264-1] ruby-sinatra security update mailing-list