CVE-2020-11076

mediumPriorität · verfolgen · 41EPSS 0.041 · 91. PerzentilExploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

4.09% (91st) EPSS

CVSS 5 · medium

Is it mine?

13 products

Prüfe deine Angriffsfläche

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · bewertet 2026-10-27

In Puma (RubyGem) before 4.3.4 and 3.12.5, an attacker could smuggle an HTTP response, by using an invalid transfer-encoding header. The problem has been fixed in Puma 3.12.5 and Puma 4.3.4.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

Behobenruby4.0-rubygem-puma-0:6.4.3-1.5.aarch64 as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Behobenruby4.0-rubygem-puma-0:6.4.3-1.5.ppc64le as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Behobenruby4.0-rubygem-puma-0:6.4.3-1.5.s390x as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Behobenruby4.0-rubygem-puma-0:6.4.3-1.5.x86_64 as component of openSUSE Tumbleweedsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · security-advisories@github.comAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Psecondary · CVSS-BT (t0sche)

v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:Nsecondary · SUSE Product Security

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-444USprimärCWE-444USCWE-444US

Exploits (1)

Öffentlicher Proof-of-Concept- und Exploit-Code.

dentarg/cougarPuma, CVE-2020-11076 and CVE-2020-11077PoC · poc_in_github

betroffene Produkte (13)

Betroffene Produkte und Versionsbereiche.

puma puma≤ < 3.12.5enisa_euvdEU
puma puma4.0.0, → 4.3.4enisa_euvdEU
Novell Inc. OpenSUSE Leap≤ 15.2fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.1fstec_bduRU
АО «НППКТ» ОСОН ОСнова Оnyx≤ 2.1fstec_bduRU
Сообщество свободного программного обеспечения Puma≤ 4.3.4fstec_bduRU
Сообщество свободного программного обеспечения Puma≤ 3.12.5fstec_bduRU
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
fedoraproject fedora= 33nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
puma puma3.0.0 → 3.12.6nvdUScpe:2.3:a:puma:puma:*:*:*:*:*:*:*:*
puma puma4.0.0 → 4.3.5nvdUScpe:2.3:a:puma:puma:*:*:*:*:*:*:*:*
RubyGems puma< 3.12.5osvUSpkg:gem/puma
RubyGems puma4.0.0 → 4.3.4osvUSpkg:gem/puma

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

openSUSE-SU-2026:10357-1ruby4.0-rubygem-puma-6.4.3-1.5 on GA media2026-03-13csaf · suse_csafDE
ruby4.0-rubygem-puma-6.4.3-1.5 on GA media
GHSA-x7jg-6pwg-fx5hHTTP Smuggling via Transfer-Encoding Header in Puma2020-05-22ghsa · osvUS
### 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)

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu nvd osv suse_csaf NVD CVE.org MITRE

veröffentlicht 2020-05-22geändert 2026-06-17

verwandt (553)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2026-48710US	medium6.5OT kritisch	70.3% (99th)	KEV	2026-05-26
Starlette is a lightweight ASGI framework/toolkit. Prior to version 1.0.1, the HTTP `Host` request header was not validated before being used to reconstruct `request.url`. Because…
CVE-2025-61884US	—OT kritisch	95.9% (100th)	KEV	2025-10-12
Vulnerability in the Oracle Configurator product of Oracle E-Business Suite (component: Runtime UI). Supported versions that are affected are 12.2.3-12.2.14. Easily exploitable vu…
CVE-2023-48365US	critical9.9OT kritisch	47.7% (99th)	KEV	2023-11-15
Qlik Sense Enterprise for Windows before August 2023 Patch 2 allows unauthenticated remote code execution, aka QB-21683. Due to improper validation of HTTP headers, a remote attack…
CVE-2023-41265US	critical9.9OT kritisch	88.2% (100th)	KEV	2023-08-29
An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch…
CVE-2022-22536US	critical10.0OT kritisch	97.9% (100th)	KEV	2022-02-09
SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53 and SAP Web Dispatcher are vulnerable for request smuggling and…

+548 weitere

Referenzen (29)

Externe Belege — Patches, Meldungen, Analysen.

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