Denial of Service (DoS) in Splunk Enterprise Using a Malformed SAML Request
Published Aug 30, 2023
7.5
HIGHCVSS 3.1
EPSS 0.58%
Description
In Splunk Enterprise versions lower than 9.0.6 and 8.2.12, a malicious actor can send a malformed security assertion markup language (SAML) request to the `/saml/acs` REST endpoint which can cause a denial of service through a crash or hang of the Splunk daemon.
Affected products
-
- Version -StatusaffectedConstraints<9.0.2205
- Version
-
- Version 8.2StatusaffectedConstraints<8.2.12
- Version 9.0StatusaffectedConstraints<9.0.6
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Splunk | Splunk Cloud | n/a |
| |||||||||
| Splunk | Splunk Enterprise | n/a |
|
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:N/UI:N/S:U/C:N/I:N/A:H
1 other source (CVE.org) ▾
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/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.
No CISA SSVC assessment for this CVE yet.
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 (7 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.58% (0.00582) | 45.80th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.49% (0.00487) | 37.89th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.18% (0.00185) | 38.12th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.09% (0.00088) | 39.38th | v3 (v2023.03.01) |
| May 6, 2024 | 0.05% (0.00046) | 15.96th | v3 (v2023.03.01) |
| Sep 2, 2023 | 0.05% (0.00046) | 13.96th | v3 (v2023.03.01) |
| Aug 31, 2023 | 0.04% (0.00043) | 6.94th | v3 (v2023.03.01) |
References (2)
- https://advisory.splunk.com/advisories/SVD-2023-0802 Vendor Advisory
- https://research.splunk.com/application/8e8a86d5-f323-4567-95be-8e817e2baee6/ Vendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://advisory.splunk.com/advisories/SVD-2023-0802 | Vendor Advisory | |
| https://research.splunk.com/application/8e8a86d5-f323-4567-95be-8e817e2baee6/ | Vendor Advisory |
Change history (0)
No recorded changes yet.