# CVE-2021-1507: Cisco SD-WAN vManage API Stored Cross-Site Scripting Vulnerability

> Authenticated attackers can inject malicious scripts into the Cisco SD-WAN vManage web interface, potentially executing code or stealing browser data.

- **Severity:** Medium 6.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N`)
- **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:** 6 May 2021
- **Updated:** 8 Nov 2024
- **Also known as:** GHSA-c27h-mm4h-h764

## What is CVE-2021-1507?

CVE-2021-1507 is a medium-severity cross-site scripting vulnerability in Cisco SD-WAN vManage, published on 6 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability in an API of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against users of the application web-based interface. This vulnerability exists because the API does not properly validate user-supplied input. An attacker could exploit this vulnerability by sending malicious input to the API. A successful exploit could allow the attacker to execute arbitrary script code in the context of the web-based interface or access sensitive, browser-based information.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-1507?

It affects 1 product.


Products: Cisco Sd-Wan Vmanage.

## How do I fix CVE-2021-1507?

No fix has been published for CVE-2021-1507 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-1507 being exploited?

There is no known exploitation of CVE-2021-1507 in the wild and no public exploit code.

## Other vulnerabilities in Cisco SD-WAN vManage

- [CVE-2020-27129](https://insights.sbomify.com/CVE-2020-27129/): Cisco SD-WAN vManage Software Command Injection Vulnerability (medium 6.7)
- [CVE-2021-1225](https://insights.sbomify.com/CVE-2021-1225/): Cisco SD-WAN vManage SQL Injection Vulnerabilities (medium 6.5)
- [CVE-2021-1349](https://insights.sbomify.com/CVE-2021-1349/): Cisco SD-WAN vManage Cypher Query Language Injection Vulnerability (medium 6.5)
- [CVE-2021-1235](https://insights.sbomify.com/CVE-2021-1235/): Cisco SD-WAN vManage Information Disclosure Vulnerability (medium 5.5)
- [CVE-2021-1535](https://insights.sbomify.com/CVE-2021-1535/): Cisco SD-WAN vManage Information Disclosure Vulnerability (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-1507 and fix it if it is affected.

What it is: CVE-2021-1507 is a medium-severity cross-site scripting vulnerability in Cisco SD-WAN vManage, published on 6 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-1507 in the wild and no public exploit code.

Affected product: Cisco SD-WAN vManage. 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-2021-1507/ (Markdown: https://insights.sbomify.com/CVE-2021-1507/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-1507
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-1507
- OSV: https://osv.dev/vulnerability/CVE-2021-1507

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-1507/
Summaries are generated and may contain mistakes; the official description above is the record.