Skip to main content

Cisco Talos Intelligence CVE-2026-76390

| EUVDEUVD-2026-62955 MEDIUM
Information Exposure (CWE-200)
2026-08-19 cisco GHSA-x4c2-cp22-3gjj
5.3
CVSS 3.1 · Vendor: cisco
Share

Severity by source

Vendor (cisco) PRIMARY
5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
vuln.today AI
5.3 MEDIUM

Unauthenticated network access to a static file path; only API documentation is disclosed with no integrity or availability impact.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (cisco).

CVSS VectorVendor: cisco

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

3
Analysis Generated
Aug 19, 2026 - 22:46 vuln.today
Patch available
Aug 19, 2026 - 22:04 EUVD
CVE Published
Aug 19, 2026 - 21:35 nvd
MEDIUM 5.3

DescriptionCVE.org

In Cisco Talos Intelligence for Enterprise Security Cloud versions below 1.0.3, an unauthenticated user could access the add-on OpenAPI specification through Splunk Web static file paths. The exposed specification could allow for reconnaissance of the add-on Representational State Transfer (REST) API endpoints and authentication model. The vulnerability is possible because the generated OpenAPI specification is packaged in a static file path that Splunk Web serves without authentication. For more information see Deploy Cisco Talos Intelligence for Splunk Enterprise Security (https://help.splunk.com/en/splunk-enterprise-security-8/user-guide/8.0/introduction/deploy-cisco-talos-intelligence-for-splunk-enterprise-security-cloud-only) in the Splunk documentation.

AnalysisAI

Unauthenticated exposure of the OpenAPI specification in Cisco Talos Intelligence for Enterprise Security Cloud (versions below 1.0.3) allows any network-accessible user to retrieve the add-on's full REST API documentation via Splunk Web static file paths. The disclosed specification reveals API endpoint structure and the authentication model, enabling reconnaissance that could facilitate targeted follow-on attacks. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify network-accessible Splunk Web instance
Delivery
Request static OpenAPI spec path without credentials
Exploit
Enumerate REST API endpoints and authentication model
Execution
Craft targeted follow-on API requests
Impact
Attempt API-layer exploitation

Vulnerability AssessmentAI

Exploitation Exploitation requires network access to a Splunk Web instance running Cisco Talos Intelligence for Enterprise Security Cloud in a version below 1.0.3. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 5.3 Medium score (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) accurately characterizes the exposure: zero-friction unauthenticated network access, but impact limited strictly to information disclosure with no integrity or availability consequence. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An unauthenticated attacker with network access to a Splunk Web instance sends an HTTP GET request to the known static file path where the add-on packages its OpenAPI specification. The server responds with the full API contract, including endpoint URLs, HTTP methods, parameter names, and authentication scheme details. …
Remediation Upgrade Cisco Talos Intelligence for Enterprise Security Cloud to version 1.0.3 or later, which resolves the unauthenticated static file exposure. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

More in Splunk

View all
CVE-2026-20253 CRITICAL POC
9.8 Jun 10

Unauthenticated arbitrary file write in Splunk Enterprise (below 10.2.4 and 10.0.7) and Splunk Cloud Platform (below 10.

CVE-2024-36985 HIGH POC
8.8 Jul 01

In Splunk Enterprise versions below 9.2.2, 9.1.5, and 9.0.10, a low-privileged user that does not hold the admin or powe

CVE-2023-46214 HIGH POC
8.8 Nov 16

In Splunk Enterprise versions below 9.0.7 and 9.1.2, Splunk Enterprise does not safely sanitize extensible stylesheet la

CVE-2023-32707 HIGH POC
8.8 Jun 01

In versions of Splunk Enterprise below 9.0.5, 8.2.11, and 8.1.14, and Splunk Cloud Platform below version 9.0.2303.100,

CVE-2022-43571 HIGH POC
8.8 Nov 03

In Splunk Enterprise versions below 8.2.9, 8.1.12, and 9.0.2, an authenticated user can execute arbitrary code through t

CVE-2022-43567 HIGH POC
8.8 Nov 04

In Splunk Enterprise versions below 8.2.9, 8.1.12, and 9.0.2, an authenticated user can run arbitrary operating system c

CVE-2026-54511 HIGH POC
8.6 Aug 26

Log injection in @logtape/syslog allows network-accessible attackers to forge arbitrary syslog records in downstream col

CVE-2023-22934 HIGH POC
8.0 Feb 14

In Splunk Enterprise versions below 8.1.13, 8.2.10, and 9.0.4, the ‘pivot’ search processing language (SPL) command lets

CVE-2022-43566 HIGH POC
8.0 Nov 04

In Splunk Enterprise versions below 8.2.9, 8.1.12, and 9.0.2, an authenticated user can run risky commands using a more

CVE-2024-36991 HIGH POC
7.5 Jul 01

In Splunk Enterprise on Windows versions below 9.2.2, 9.1.5, and 9.0.10, an attacker could perform a path traversal on t

CVE-2024-36990 MEDIUM POC
6.5 Jul 01

In Splunk Enterprise versions below 9.2.2, 9.1.5, and 9.0.10 and Splunk Cloud Platform versions below 9.2.2403.100, an a

CVE-2017-17067 CRITICAL
9.8 Nov 30

Splunk Web in Splunk Enterprise 7.0.x before 7.0.0.1, 6.6.x before 6.6.3.2, 6.5.x before 6.5.6, 6.4.x before 6.4.9, and

Share

CVE-2026-76390 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy