Staging Environment: Content and features may be unstable or change without notice.
Search for packages
Package details: pkg:deb/debian/puma@4.3.6-1?distro=trixie
purl pkg:deb/debian/puma@4.3.6-1?distro=trixie
Vulnerabilities affecting this package (0)
Vulnerability Summary Fixed by
This package is not known to be affected by vulnerabilities.
Vulnerabilities fixed by this package (2)
Vulnerability Summary Aliases
VCID-bk4b-h5hu-2qeq HTTP Smuggling via Transfer-Encoding Header in Puma ### Impact This is a similar but different vulnerability to the one patched in 3.12.5 and 4.3.4. A client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. If the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first request's body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client. ### Patches The problem has been fixed in Puma 3.12.6 and Puma 4.3.5. ### For more information If you have any questions or comments about this advisory: * Open an issue in [Puma](https://github.com/puma/puma) * See our [security policy](https://github.com/puma/puma/security/policy) CVE-2020-11077
GHSA-w64w-qqph-5gxm
VCID-euqw-bed6-z7d6 HTTP Smuggling via Transfer-Encoding Header in Puma ### Impact By using an invalid transfer-encoding header, an attacker could [smuggle an HTTP response.](https://portswigger.net/web-security/request-smuggling) Originally reported by @ZeddYu, who has our thanks for the detailed report. ### Patches The problem has been fixed in Puma 3.12.5 and Puma 4.3.4. ### For more information If you have any questions or comments about this advisory: * Open an issue in [Puma](https://github.com/puma/puma) * See our [security policy](https://github.com/puma/puma/security/policy) CVE-2020-11076
GHSA-x7jg-6pwg-fx5h

Date Actor Action Vulnerability Source VulnerableCode Version
2026-04-16T12:44:03.529607+00:00 Debian Importer Fixing VCID-bk4b-h5hu-2qeq https://security-tracker.debian.org/tracker/data/json 38.4.0
2026-04-16T10:33:37.245494+00:00 Debian Importer Fixing VCID-euqw-bed6-z7d6 https://security-tracker.debian.org/tracker/data/json 38.4.0
2026-04-13T08:43:53.627247+00:00 Debian Importer Fixing VCID-bk4b-h5hu-2qeq https://security-tracker.debian.org/tracker/data/json 38.3.0
2026-04-13T07:07:53.519584+00:00 Debian Importer Fixing VCID-euqw-bed6-z7d6 https://security-tracker.debian.org/tracker/data/json 38.3.0
2026-04-03T07:50:24.618256+00:00 Debian Importer Fixing VCID-bk4b-h5hu-2qeq https://security-tracker.debian.org/tracker/data/json 38.1.0
2026-04-03T07:50:24.578402+00:00 Debian Importer Fixing VCID-euqw-bed6-z7d6 https://security-tracker.debian.org/tracker/data/json 38.1.0