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CVE-2023-37467

MEDIUMCVSS 5.4/10EPSS 0.32%

Last modified

CVE-2023-37467 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Discourse is an open source discussion platform. Prior to version 3.1.0.beta7 of the `beta` and `tests-passed` branches, a CSP (Content Security Policy) nonce reuse vulnerability was discovered could allow cross-site scripting (XSS) attacks to bypass CSP protection for anonymous (i.e. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

Description

Discourse is an open source discussion platform. Prior to version 3.1.0.beta7 of the `beta` and `tests-passed` branches, a CSP (Content Security Policy) nonce reuse vulnerability was discovered could allow cross-site scripting (XSS) attacks to bypass CSP protection for anonymous (i.e. unauthenticated) users. There are no known XSS vectors at the moment, but should one be discovered, this vulnerability would allow the XSS attack to bypass CSP and execute successfully. This vulnerability isn't applicable to logged-in users. Version 3.1.0.beta7 contains a patch. The stable branch doesn't have this vulnerability. A workaround to prevent the vulnerability is to disable Google Tag Manager, i.e., unset the `gtm container id` setting.

Metrics

CVSS 3.1
5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability
0.32%

23.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
DiscourseDiscourse1.1.0Beta1
DiscourseDiscourse1.2.0Beta1
DiscourseDiscourse1.3.0Beta1
DiscourseDiscourse1.4.0Beta1
DiscourseDiscourse1.5.0Beta1
DiscourseDiscourse1.6.0Beta1
DiscourseDiscourse1.7.0Beta1
DiscourseDiscourse1.8.0Beta1
DiscourseDiscourse1.9.0Beta1
DiscourseDiscourse2.0.0Beta1
DiscourseDiscourse2.1.0Beta1
DiscourseDiscourse2.2.0Beta1
DiscourseDiscourse2.3.0Beta1
DiscourseDiscourse2.4.0Beta1
DiscourseDiscourse2.5.0Beta1
DiscourseDiscourse2.6.0Beta1
DiscourseDiscourse2.7.0Beta1
DiscourseDiscourse2.8.0Beta1
DiscourseDiscourse2.9.0Beta1
DiscourseDiscourse3.0.0Beta15
DiscourseDiscourse3.1.0Beta1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-37467?
Discourse is an open source discussion platform. Prior to version 3.1.0.beta7 of the `beta` and `tests-passed` branches, a CSP (Content Security Policy) nonce reuse vulnerability was discovered could allow cross-site scripting (XSS) attacks to bypass CSP protection for anonymous (i.e. unauthenticated) users. There are no known XSS vectors at the moment, but should one be discovered, this vulnerability would allow the XSS attack to bypass CSP and execute successfully. This vulnerability isn't applicable to logged-in users. Version 3.1.0.beta7 contains a patch. The stable branch doesn't have this vulnerability. A workaround to prevent the vulnerability is to disable Google Tag Manager, i.e., unset the `gtm container id` setting.
How severe is CVE-2023-37467?
CVE-2023-37467 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.
How do I fix CVE-2023-37467?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-37467?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST