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CVE-2025-32376

MEDIUMCVSS 4.8/10EPSS 0.22%

Last modified

CVE-2025-32376 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Discourse is an open-source discussion platform. Prior to versions 3.4.3 on the stable branch and 3.5.0.beta3 on the beta branch, the users limit for a DM can be bypassed, thus giving the ability to potentially create a DM with every user from a site in it. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

Discourse is an open-source discussion platform. Prior to versions 3.4.3 on the stable branch and 3.5.0.beta3 on the beta branch, the users limit for a DM can be bypassed, thus giving the ability to potentially create a DM with every user from a site in it. This issue has been patched in stable version 3.4.3 and beta version 3.5.0.beta3.

Metrics

CVSS 3.1
4.3/10

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

CVSS 4.0
4.8/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.22%

11.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
DiscourseDiscourse< 3.4.3—
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
DiscourseDiscourse3.2.0—
DiscourseDiscourse3.3.0Beta1
DiscourseDiscourse3.4.0Beta1
DiscourseDiscourse3.5.0Beta1

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-32376?
Discourse is an open-source discussion platform. Prior to versions 3.4.3 on the stable branch and 3.5.0.beta3 on the beta branch, the users limit for a DM can be bypassed, thus giving the ability to potentially create a DM with every user from a site in it. This issue has been patched in stable version 3.4.3 and beta version 3.5.0.beta3.
How severe is CVE-2025-32376?
CVE-2025-32376 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.
How do I fix CVE-2025-32376?
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-2025-32376?

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

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Source: NVD / NIST