// For flags

CVE-2021-30641

Unexpected URL matching with 'MergeSlashes OFF'

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF'

Apache HTTP Server versiones 2.4.39 a 2.4.46. Un Comportamiento inesperado de coincidencia con el parĂ¡metro "MergeSlashes OFF"

A flaw was found in Apache httpd. A possible regression from an earlier security fix broke behavior of MergeSlashes. The highest threat from this vulnerability is to data integrity.

*Credits: Discovered by Christoph Anton Mitterer
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-04-13 CVE Reserved
  • 2021-06-10 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-08-11 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apache
Search vendor "Apache"
Http Server
Search vendor "Apache" for product "Http Server"
>= 2.4.39 <= 2.4.46
Search vendor "Apache" for product "Http Server" and version " >= 2.4.39 <= 2.4.46"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected
Debian
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Debian Linux
Search vendor "Debian" for product "Debian Linux"
10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
34
Search vendor "Fedoraproject" for product "Fedora" and version "34"
-
Affected
Fedoraproject
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Fedora
Search vendor "Fedoraproject" for product "Fedora"
35
Search vendor "Fedoraproject" for product "Fedora" and version "35"
-
Affected
Oracle
Search vendor "Oracle"
Enterprise Manager Ops Center
Search vendor "Oracle" for product "Enterprise Manager Ops Center"
12.4.0.0
Search vendor "Oracle" for product "Enterprise Manager Ops Center" and version "12.4.0.0"
-
Affected
Oracle
Search vendor "Oracle"
Instantis Enterprisetrack
Search vendor "Oracle" for product "Instantis Enterprisetrack"
17.1
Search vendor "Oracle" for product "Instantis Enterprisetrack" and version "17.1"
-
Affected
Oracle
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Instantis Enterprisetrack
Search vendor "Oracle" for product "Instantis Enterprisetrack"
17.2
Search vendor "Oracle" for product "Instantis Enterprisetrack" and version "17.2"
-
Affected
Oracle
Search vendor "Oracle"
Instantis Enterprisetrack
Search vendor "Oracle" for product "Instantis Enterprisetrack"
17.3
Search vendor "Oracle" for product "Instantis Enterprisetrack" and version "17.3"
-
Affected
Oracle
Search vendor "Oracle"
Zfs Storage Appliance Kit
Search vendor "Oracle" for product "Zfs Storage Appliance Kit"
8.8
Search vendor "Oracle" for product "Zfs Storage Appliance Kit" and version "8.8"
-
Affected