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HistoryJan 28, 2023 - 12:15 a.m.
CVE-2023-23621
discourse open-source platform
regular expression denial of service
user agent
vulnerability patch
cve-2023-23621
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.2 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
34.7%
Discourse is an open-source discussion platform. Prior to version 3.0.1 on the stable branch and version 3.1.0.beta2 on the beta and tests-passed branches, a malicious user can cause a regular expression denial of service using a carefully crafted user agent. This issue is patched in version 3.0.1 on the stable branch and version 3.1.0.beta2 on the beta and tests-passed branches. There are no known workarounds.
Affected configurations
Node
discoursediscourseRange<3.0.1stable
Node
discoursediscourseMatch1.1.0beta1beta
ORdiscoursediscourseMatch1.1.0beta2beta
ORdiscoursediscourseMatch1.1.0beta3beta
ORdiscoursediscourseMatch1.1.0beta4beta
ORdiscoursediscourseMatch1.1.0beta5beta
ORdiscoursediscourseMatch1.1.0beta6beta
ORdiscoursediscourseMatch1.1.0beta6bbeta
ORdiscoursediscourseMatch1.1.0beta7beta
ORdiscoursediscourseMatch1.1.0beta8beta
ORdiscoursediscourseMatch1.2.0beta1beta
ORdiscoursediscourseMatch1.2.0beta2beta
ORdiscoursediscourseMatch1.2.0beta3beta
ORdiscoursediscourseMatch1.2.0beta4beta
ORdiscoursediscourseMatch1.2.0beta5beta
ORdiscoursediscourseMatch1.2.0beta6beta
ORdiscoursediscourseMatch1.2.0beta7beta
ORdiscoursediscourseMatch1.2.0beta8beta
ORdiscoursediscourseMatch1.2.0beta9beta
ORdiscoursediscourseMatch1.3.0beta1beta
ORdiscoursediscourseMatch1.3.0beta10beta
ORdiscoursediscourseMatch1.3.0beta11beta
ORdiscoursediscourseMatch1.3.0beta2beta
ORdiscoursediscourseMatch1.3.0beta3beta
ORdiscoursediscourseMatch1.3.0beta4beta
ORdiscoursediscourseMatch1.3.0beta5beta
ORdiscoursediscourseMatch1.3.0beta6beta
ORdiscoursediscourseMatch1.3.0beta7beta
ORdiscoursediscourseMatch1.3.0beta8beta
ORdiscoursediscourseMatch1.3.0beta9beta
ORdiscoursediscourseMatch1.4.0beta1beta
ORdiscoursediscourseMatch1.4.0beta10beta
ORdiscoursediscourseMatch1.4.0beta11beta
ORdiscoursediscourseMatch1.4.0beta12beta
ORdiscoursediscourseMatch1.4.0beta2beta
ORdiscoursediscourseMatch1.4.0beta3beta
ORdiscoursediscourseMatch1.4.0beta4beta
ORdiscoursediscourseMatch1.4.0beta5beta
ORdiscoursediscourseMatch1.4.0beta6beta
ORdiscoursediscourseMatch1.4.0beta7beta
ORdiscoursediscourseMatch1.4.0beta8beta
ORdiscoursediscourseMatch1.4.0beta9beta
ORdiscoursediscourseMatch1.5.0beta1beta
ORdiscoursediscourseMatch1.5.0beta10beta
ORdiscoursediscourseMatch1.5.0beta11beta
ORdiscoursediscourseMatch1.5.0beta12beta
ORdiscoursediscourseMatch1.5.0beta13beta
ORdiscoursediscourseMatch1.5.0beta13bbeta
ORdiscoursediscourseMatch1.5.0beta14beta
ORdiscoursediscourseMatch1.5.0beta2beta
ORdiscoursediscourseMatch1.5.0beta3beta
ORdiscoursediscourseMatch1.5.0beta4beta
ORdiscoursediscourseMatch1.5.0beta5beta
ORdiscoursediscourseMatch1.5.0beta6beta
ORdiscoursediscourseMatch1.5.0beta7beta
ORdiscoursediscourseMatch1.5.0beta8beta
ORdiscoursediscourseMatch1.5.0beta9beta
ORdiscoursediscourseMatch1.6.0beta1beta
ORdiscoursediscourseMatch1.6.0beta10beta
ORdiscoursediscourseMatch1.6.0beta11beta
ORdiscoursediscourseMatch1.6.0beta12beta
ORdiscoursediscourseMatch1.6.0beta2beta
ORdiscoursediscourseMatch1.6.0beta3beta
ORdiscoursediscourseMatch1.6.0beta4beta
ORdiscoursediscourseMatch1.6.0beta5beta
ORdiscoursediscourseMatch1.6.0beta6beta
ORdiscoursediscourseMatch1.6.0beta7beta
ORdiscoursediscourseMatch1.6.0beta8beta
ORdiscoursediscourseMatch1.6.0beta9beta
ORdiscoursediscourseMatch1.7.0beta1beta
ORdiscoursediscourseMatch1.7.0beta10beta
ORdiscoursediscourseMatch1.7.0beta11beta
ORdiscoursediscourseMatch1.7.0beta2beta
ORdiscoursediscourseMatch1.7.0beta3beta
ORdiscoursediscourseMatch1.7.0beta4beta
ORdiscoursediscourseMatch1.7.0beta5beta
ORdiscoursediscourseMatch1.7.0beta6beta
ORdiscoursediscourseMatch1.7.0beta7beta
ORdiscoursediscourseMatch1.7.0beta8beta
ORdiscoursediscourseMatch1.7.0beta9beta
ORdiscoursediscourseMatch1.8.0beta1beta
ORdiscoursediscourseMatch1.8.0beta10beta
ORdiscoursediscourseMatch1.8.0beta11beta
ORdiscoursediscourseMatch1.8.0beta12beta
ORdiscoursediscourseMatch1.8.0beta13beta
ORdiscoursediscourseMatch1.8.0beta2beta
ORdiscoursediscourseMatch1.8.0beta3beta
ORdiscoursediscourseMatch1.8.0beta4beta
ORdiscoursediscourseMatch1.8.0beta5beta
ORdiscoursediscourseMatch1.8.0beta6beta
ORdiscoursediscourseMatch1.8.0beta7beta
ORdiscoursediscourseMatch1.8.0beta8beta
ORdiscoursediscourseMatch1.8.0beta9beta
ORdiscoursediscourseMatch1.9.0beta1beta
ORdiscoursediscourseMatch1.9.0beta10beta
ORdiscoursediscourseMatch1.9.0beta11beta
ORdiscoursediscourseMatch1.9.0beta12beta
ORdiscoursediscourseMatch1.9.0beta13beta
ORdiscoursediscourseMatch1.9.0beta14beta
ORdiscoursediscourseMatch1.9.0beta15beta
ORdiscoursediscourseMatch1.9.0beta16beta
ORdiscoursediscourseMatch1.9.0beta17beta
ORdiscoursediscourseMatch1.9.0beta2beta
ORdiscoursediscourseMatch1.9.0beta3beta
ORdiscoursediscourseMatch1.9.0beta4beta
ORdiscoursediscourseMatch1.9.0beta5beta
ORdiscoursediscourseMatch1.9.0beta6beta
ORdiscoursediscourseMatch1.9.0beta7beta
ORdiscoursediscourseMatch1.9.0beta8beta
ORdiscoursediscourseMatch1.9.0beta9beta
ORdiscoursediscourseMatch2.0.0beta1beta
ORdiscoursediscourseMatch2.0.0beta10beta
ORdiscoursediscourseMatch2.0.0beta2beta
ORdiscoursediscourseMatch2.0.0beta3beta
ORdiscoursediscourseMatch2.0.0beta4beta
ORdiscoursediscourseMatch2.0.0beta5beta
ORdiscoursediscourseMatch2.0.0beta6beta
ORdiscoursediscourseMatch2.0.0beta7beta
ORdiscoursediscourseMatch2.0.0beta8beta
ORdiscoursediscourseMatch2.0.0beta9beta
ORdiscoursediscourseMatch2.1.0beta1beta
ORdiscoursediscourseMatch2.1.0beta2beta
ORdiscoursediscourseMatch2.1.0beta3beta
ORdiscoursediscourseMatch2.1.0beta4beta
ORdiscoursediscourseMatch2.1.0beta5beta
ORdiscoursediscourseMatch2.1.0beta6beta
ORdiscoursediscourseMatch2.2.0beta1beta
ORdiscoursediscourseMatch2.2.0beta10beta
ORdiscoursediscourseMatch2.2.0beta2beta
ORdiscoursediscourseMatch2.2.0beta3beta
ORdiscoursediscourseMatch2.2.0beta4beta
ORdiscoursediscourseMatch2.2.0beta5beta
ORdiscoursediscourseMatch2.2.0beta6beta
ORdiscoursediscourseMatch2.2.0beta7beta
ORdiscoursediscourseMatch2.2.0beta8beta
ORdiscoursediscourseMatch2.2.0beta9beta
ORdiscoursediscourseMatch2.3.0beta1beta
ORdiscoursediscourseMatch2.3.0beta10beta
ORdiscoursediscourseMatch2.3.0beta11beta
ORdiscoursediscourseMatch2.3.0beta2beta
ORdiscoursediscourseMatch2.3.0beta3beta
ORdiscoursediscourseMatch2.3.0beta4beta
ORdiscoursediscourseMatch2.3.0beta5beta
ORdiscoursediscourseMatch2.3.0beta6beta
ORdiscoursediscourseMatch2.3.0beta7beta
ORdiscoursediscourseMatch2.3.0beta8beta
ORdiscoursediscourseMatch2.3.0beta9beta
ORdiscoursediscourseMatch2.4.0beta1beta
ORdiscoursediscourseMatch2.4.0beta10beta
ORdiscoursediscourseMatch2.4.0beta11beta
ORdiscoursediscourseMatch2.4.0beta2beta
ORdiscoursediscourseMatch2.4.0beta3beta
ORdiscoursediscourseMatch2.4.0beta4beta
ORdiscoursediscourseMatch2.4.0beta5beta
ORdiscoursediscourseMatch2.4.0beta6beta
ORdiscoursediscourseMatch2.4.0beta7beta
ORdiscoursediscourseMatch2.4.0beta8beta
ORdiscoursediscourseMatch2.4.0beta9beta
ORdiscoursediscourseMatch2.5.0beta1beta
ORdiscoursediscourseMatch2.5.0beta2beta
ORdiscoursediscourseMatch2.5.0beta3beta
ORdiscoursediscourseMatch2.5.0beta4beta
ORdiscoursediscourseMatch2.5.0beta5beta
ORdiscoursediscourseMatch2.5.0beta6beta
ORdiscoursediscourseMatch2.5.0beta7beta
ORdiscoursediscourseMatch2.6.0beta1beta
ORdiscoursediscourseMatch2.6.0beta2beta
ORdiscoursediscourseMatch2.6.0beta3beta
ORdiscoursediscourseMatch2.6.0beta4beta
ORdiscoursediscourseMatch2.6.0beta5beta
ORdiscoursediscourseMatch2.6.0beta6beta
ORdiscoursediscourseMatch2.7.0beta1beta
ORdiscoursediscourseMatch2.7.0beta2beta
ORdiscoursediscourseMatch2.7.0beta3beta
ORdiscoursediscourseMatch2.7.0beta4beta
ORdiscoursediscourseMatch2.7.0beta5beta
ORdiscoursediscourseMatch2.7.0beta6beta
ORdiscoursediscourseMatch2.7.0beta7beta
ORdiscoursediscourseMatch2.7.0beta8beta
ORdiscoursediscourseMatch2.7.0beta9beta
ORdiscoursediscourseMatch2.8.0beta1beta
ORdiscoursediscourseMatch2.8.0beta10beta
ORdiscoursediscourseMatch2.8.0beta11beta
ORdiscoursediscourseMatch2.8.0beta2beta
ORdiscoursediscourseMatch2.8.0beta3beta
ORdiscoursediscourseMatch2.8.0beta4beta
ORdiscoursediscourseMatch2.8.0beta5beta
ORdiscoursediscourseMatch2.8.0beta6beta
ORdiscoursediscourseMatch2.8.0beta7beta
ORdiscoursediscourseMatch2.8.0beta8beta
ORdiscoursediscourseMatch2.8.0beta9beta
ORdiscoursediscourseMatch2.9.0beta1beta
ORdiscoursediscourseMatch2.9.0beta10beta
ORdiscoursediscourseMatch2.9.0beta11beta
ORdiscoursediscourseMatch2.9.0beta12beta
ORdiscoursediscourseMatch2.9.0beta13beta
ORdiscoursediscourseMatch2.9.0beta14beta
ORdiscoursediscourseMatch2.9.0beta2beta
ORdiscoursediscourseMatch2.9.0beta3beta
ORdiscoursediscourseMatch2.9.0beta4beta
ORdiscoursediscourseMatch2.9.0beta5beta
ORdiscoursediscourseMatch2.9.0beta6beta
ORdiscoursediscourseMatch2.9.0beta7beta
ORdiscoursediscourseMatch2.9.0beta8beta
ORdiscoursediscourseMatch2.9.0beta9beta
ORdiscoursediscourseMatch3.0.0beta15beta
ORdiscoursediscourseMatch3.0.0beta16beta
ORdiscoursediscourseMatch3.1.0beta1beta
Related
prion
prion
Design/Logic Flaw
2023-01-28 00:15:00
osv
osv
BIT-discourse-2023-23621
2024-03-06 11:00:18
CVE-2023-23621
2023-01-28 00:15:09
cvelist
cvelist
CVE-2023-23621 Discourse vulnerable to ReDoS in user agent parsing
2023-01-27 23:31:05
cve
cve
CVE-2023-23621
2023-01-28 00:15:09
openvas
openvas
Discourse 3.1.x < 3.1.0.beta2 Multiple Vulnerabilities
2023-01-27 00:00:00
Discourse < 3.0.1 Multiple Vulnerabilities
2023-01-27 00:00:00
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.2 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
34.7%
Related for NVD:CVE-2023-23621