Discourse vulnerable to multisite DoS by spamming backups
Published Mar 17, 2023
4.9
MEDIUMCVSS 3.1
EPSS 0.65%
Description
Discourse is an open-source discussion platform. Prior to version 3.0.2 of the `stable` branch and version 3.1.0.beta3 of the `beta` and `tests-passed` branches, a user logged as an administrator can request backups multiple times, which will eat up all the connections to the DB. If this is done on a site using multisite, then it can affect the whole cluster. The vulnerability is patched in version 3.0.2 of the `stable` branch and version 3.1.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.
Affected products
-
- Version beta < 3.1.0.beta3StatusaffectedConstraints-
- Version stable < 3.0.2StatusaffectedConstraints-
- Version tests-passed < 3.1.0.beta3StatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
1 other source (GitHub) ▾
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Feb 25, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2023–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.65% (0.00652) | 49.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.65% (0.00652) | 46.19th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.55% (0.00552) | 66.05th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.15% (0.00150) | 52.61th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.12% (0.00117) | 45.91th | v3 (v2023.03.01) |
| Mar 23, 2024 | 0.11% (0.00111) | 43.34th | v3 (v2023.03.01) |
| Feb 15, 2024 | 0.08% (0.00078) | 31.50th | v3 (v2023.03.01) |
| Mar 24, 2023 | 0.07% (0.00066) | 26.69th | v3 (v2023.03.01) |
| Mar 18, 2023 | 0.04% (0.00045) | 12.14th | v3 (v2023.03.01) |
References (5)
- https://github.com/discourse/discourse/commit/0bd64788d2b4680c04fbef76314a24884d65fed9 x_refsource_MISCPatch
- https://github.com/discourse/discourse/commit/78a3efa7104eed6dd3ed7a06a71e2705337d9e61 x_refsource_MISCPatch
- https://github.com/discourse/discourse/pull/20700 x_refsource_MISCPatch
- https://github.com/discourse/discourse/pull/20701 x_refsource_MISCPatch
- https://github.com/discourse/discourse/security/advisories/GHSA-cp7c-fm4c-6xxx x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/discourse/discourse/commit/0bd64788d2b4680c04fbef76314a24884d65fed9 | x_refsource_MISCPatch | |
| https://github.com/discourse/discourse/commit/78a3efa7104eed6dd3ed7a06a71e2705337d9e61 | x_refsource_MISCPatch | |
| https://github.com/discourse/discourse/pull/20700 | x_refsource_MISCPatch | |
| https://github.com/discourse/discourse/pull/20701 | x_refsource_MISCPatch | |
| https://github.com/discourse/discourse/security/advisories/GHSA-cp7c-fm4c-6xxx | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.