CVE-2020-26409

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A DOS vulnerability exists in Gitlab CE/EE >=10.3, <13.4.7,>=13.5, <13.5.5,>=13.6, <13.6.2 that allows an attacker to trigger uncontrolled resource by bypassing input validation in markdown fields.

Se presenta una vulnerabilidad de DOS en Gitlab CE/EE versiones posteriores a 10.3 incluyéndola, versiones anteriores a 13.4.7, versiones posteriores a 13.5 incluyéndola, versiones anteriores a 13.5.5, versiones posteriores a 13.6 incluyéndola, versiones anteriores 13.6.2, que permite a un atacante activar un recurso no controlado al omitir la comprobación de entrada en los campos markdown

*Credits: Thanks [misha98857](https://hackerone.com/misha98857) for reporting this vulnerability through our HackerOne bug bounty program

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-01 CVE Reserved
2020-12-11 CVE Published
2023-03-07 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (2)

URL	Tag	Source
https://gitlab.com/gitlab-org/gitlab/-/issues/259626	Broken Link

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26409.json	2021-07-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 10.3.0 < 13.4.7 Search vendor "Gitlab" for product "Gitlab" and version " >= 10.3.0 < 13.4.7"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 10.3.0 < 13.4.7 Search vendor "Gitlab" for product "Gitlab" and version " >= 10.3.0 < 13.4.7"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 13.5.0 < 13.5.5 Search vendor "Gitlab" for product "Gitlab" and version " >= 13.5.0 < 13.5.5"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 13.5.0 < 13.5.5 Search vendor "Gitlab" for product "Gitlab" and version " >= 13.5.0 < 13.5.5"		enterprise		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 13.6.0 < 13.6.2 Search vendor "Gitlab" for product "Gitlab" and version " >= 13.6.0 < 13.6.2"		community		Affected
Gitlab Search vendor "Gitlab"		Gitlab Search vendor "Gitlab" for product "Gitlab"				>= 13.6.0 < 13.6.2 Search vendor "Gitlab" for product "Gitlab" and version " >= 13.6.0 < 13.6.2"		enterprise		Affected