# CVE-2026-76389: Server-Side Request Forgery (SSRF) through the REST API in Cisco Talos Intelligence for Enterprise Security Cloud

> An attacker with specific capabilities can trigger SSRF to expose tokens, compromising data and system integrity in the Splunk instance.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Aug 2026
- **Updated:** 20 Aug 2026
- **Also known as:** GHSA-cccc-wrrh-hw2h

## What is CVE-2026-76389?

CVE-2026-76389 is a high-severity server-side request forgery vulnerability in Splunk Cisco Talos Intelligence for Enterprise Security Cloud, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

In Cisco Talos Intelligence for Enterprise Security Cloud versions below 1.0.3, a user that holds a role with the get_talos_enrichment capability could send a crafted request to the Talos intelligence enrichment Representational State Transfer (REST) API endpoint and cause the instance to make an outbound request to an attacker-controlled server. The request could expose tokens that compromise all relevant data and system integrity in the Splunk instance. The vulnerability is possible because the Talos intelligence enrichment REST endpoint accepts the destination for authenticated Splunk management requests from request data. 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.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-76389?

It affects 1 product.


Products: Cisco Talos Intelligence for Enterprise Security Cloud.

## How do I fix CVE-2026-76389?

No fix has been published for CVE-2026-76389 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-76389 being exploited?

There is no known exploitation of CVE-2026-76389 in the wild and no public exploit code.

## Other vulnerabilities in Splunk Cisco Talos Intelligence for Enterprise Security Cloud

- [CVE-2026-76390](https://insights.sbomify.com/CVE-2026-76390/): Information Disclosure through Splunk Web in Cisco Talos Intelligence for Enterprise Security Cloud (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76389 and fix it if it is affected.

What it is: CVE-2026-76389 is a high-severity server-side request forgery vulnerability in Splunk Cisco Talos Intelligence for Enterprise Security Cloud, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-76389 in the wild and no public exploit code.

Affected product: Splunk Cisco Talos Intelligence for Enterprise Security Cloud. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-76389/ (Markdown: https://insights.sbomify.com/CVE-2026-76389/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76389
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76389
- OSV: https://osv.dev/vulnerability/CVE-2026-76389

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-76389/
Summaries are generated and may contain mistakes; the official description above is the record.