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CVE-2023-36473

MEDIUMCVSS 6.1/10EPSS 0.35%

Last modified

CVE-2023-36473 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Discourse is an open source discussion platform. A CSP (Content Security Policy) nonce reuse vulnerability could allow XSS attacks to bypass CSP protection. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

Discourse is an open source discussion platform. A CSP (Content Security Policy) nonce reuse vulnerability could allow XSS attacks to bypass CSP protection. There are no known XSS vectors at the moment, but should one be discovered, this vulnerability would allow the XSS attack to completely bypass CSP. The vulnerability is patched in the latest tests-passed, beta and stable branches.

Metrics

CVSS 3.1
6.1/10

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

EPSS Probability
0.35%

26.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
DiscourseDiscourse< 3.0.5—
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-2023-36473?
Discourse is an open source discussion platform. A CSP (Content Security Policy) nonce reuse vulnerability could allow XSS attacks to bypass CSP protection. There are no known XSS vectors at the moment, but should one be discovered, this vulnerability would allow the XSS attack to completely bypass CSP. The vulnerability is patched in the latest tests-passed, beta and stable branches.
How severe is CVE-2023-36473?
CVE-2023-36473 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.
How do I fix CVE-2023-36473?
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-2023-36473?

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

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Source: NVD / NIST