# CVE-2023-26218: TIBCO Nimbus Reflected Cross-site Scripting (XSS) vulnerabilities

> Reflected XSS in TIBCO Nimbus Web Client allows attackers to execute scripts on victims via social engineering.

- **Severity:** High 8.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 29 Sep 2023
- **Updated:** 23 Sep 2024
- **Also known as:** GHSA-7325-4mgw-rx85

## What is CVE-2023-26218?

CVE-2023-26218 is a high-severity cross-site scripting vulnerability in TIBCO Nimbus, published on 29 Sep 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The Web Client component of TIBCO Software Inc.'s TIBCO Nimbus contains easily exploitable Reflected Cross Site Scripting (XSS) vulnerabilities that allow a low privileged attacker to social engineer a legitimate user with network access to execute scripts targeting the affected system or the victim's local system. A successful attack using this vulnerability requires human interaction from a person other than the attacker. Affected releases are TIBCO Software Inc.'s TIBCO Nimbus: versions 10.6.0 and below.

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

## Which versions are affected by CVE-2023-26218?

It affects 1 product.


Products: Tibco Nimbus.

## How do I fix CVE-2023-26218?

No fix has been published for CVE-2023-26218 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-26218 being exploited?

There is no known exploitation of CVE-2023-26218 in the wild and no public exploit code.

## Other vulnerabilities in TIBCO Nimbus

- [CVE-2022-41559](https://insights.sbomify.com/CVE-2022-41559/): TIBCO Nimbus Open Redirect Vulnerability (critical 9.3)
- [CVE-2021-35499](https://insights.sbomify.com/CVE-2021-35499/): TIBCO Nimbus Stored Cross-site Scripting (XSS) vulnerabilities (high 8.0)
- [CVE-2022-41560](https://insights.sbomify.com/CVE-2022-41560/): TIBCO Nimbus Denial of Service Vulnerability (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-26218 and fix it if it is affected.

What it is: CVE-2023-26218 is a high-severity cross-site scripting vulnerability in TIBCO Nimbus, published on 29 Sep 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-26218 in the wild and no public exploit code.

Affected product: TIBCO Nimbus. 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-2023-26218/ (Markdown: https://insights.sbomify.com/CVE-2023-26218/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-26218
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-26218
- OSV: https://osv.dev/vulnerability/CVE-2023-26218

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-26218/
Summaries are generated and may contain mistakes; the official description above is the record.