Splunk Enterprise/Cloud Platform REST API Call server-side request forgery

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Splunk Enterprise and Cloud Platform. Affected by this issue is some unknown functionality of the component REST API Call Handler. The manipulation leads to server-side request forgery. This vulnerability is uniquely identified as CVE-2025-20371. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Splunk Enterprise and Cloud Platform (affected version not known). This issue affects some unknown functionality of the component REST API Call Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In Splunk Enterprise versions below 10.0.1, 9.4.4, 9.3.6 and 9.2.8, and Splunk Cloud Platform versions below 9.3.2411.109, 9.3.2408.119 and 9.2.2406.122, an unauthenticated attacker could trigger a blind server-side request forgery (SSRF) potentially letting an attacker perform REST API calls on behalf of an authenticated high-privileged user.

The advisory is shared at advisory.splunk.com. The identification of this vulnerability is CVE-2025-20371 since 10/10/2024. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 266358 (Splunk Enterprise 9.2.0 < 9.2.8, 9.3.0 < 9.3.6, 9.4.0 < 9.4.4, 10.0.0 < 10.0.1 (SVD-2025-1006)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (266358). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.0

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CNA Base Score: 7.5
CNA Vector (cisco): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 266358
Nessus Name: Splunk Enterprise 9.2.0 < 9.2.8, 9.3.0 < 9.3.6, 9.4.0 < 9.4.4, 10.0.0 < 10.0.1 (SVD-2025-1006)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/10/2024 CVE reserved
10/01/2025 +356 days Advisory disclosed
10/01/2025 +0 days VulDB entry created
10/09/2025 +8 days VulDB entry last update

Sourcesinfo

Advisory: SVD-2025-1006
Status: Confirmed

CVE: CVE-2025-20371 (🔒)
GCVE (CVE): GCVE-0-2025-20371
GCVE (VulDB): GCVE-100-326657

Entryinfo

Created: 10/01/2025 19:09
Updated: 10/09/2025 04:50
Changes: 10/01/2025 19:09 (64), 10/02/2025 12:43 (2), 10/09/2025 04:50 (11)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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