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CVE-2023-22454

MEDIUMCVSS 6.1/10EPSS 0.57%

Last modified

CVE-2023-22454 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 3.0.0.beta16 on the `beta` and `tests-passed` branches, pending post titles can be used for cross-site scripting attacks. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 3.0.0.beta16 on the `beta` and `tests-passed` branches, pending post titles can be used for cross-site scripting attacks. Pending posts can be created by unprivileged users when a category has the "require moderator approval of all new topics" setting set. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. A patch is available in versions 2.8.14 and 3.0.0.beta16.

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
0.57%

42.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
DiscourseDiscourse< 2.8.14—
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

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-22454?
Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 3.0.0.beta16 on the `beta` and `tests-passed` branches, pending post titles can be used for cross-site scripting attacks. Pending posts can be created by unprivileged users when a category has the "require moderator approval of all new topics" setting set. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. A patch is available in versions 2.8.14 and 3.0.0.beta16.
How severe is CVE-2023-22454?
CVE-2023-22454 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.
How do I fix CVE-2023-22454?
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-2023-22454?

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

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Source: NVD / NIST