# CVE-2026-102107: Kiteworks Core user impersonation in a file-request feature

> Authenticated users can impersonate others in file requests to solicit sensitive information, requiring the feature to be enabled for the attacker.

- **Severity:** Medium 4.6 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 30 Sep 2026
- **Updated:** 1 Oct 2026

## What is CVE-2026-102107?

CVE-2026-102107 is a medium-severity vulnerability in Accellion Kiteworks, published on 30 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Kiteworks Core contains a business logic flaw in a Kiteworks file-request feature allowed an authenticated user to send a request that appeared to originate from another user, because the server did not verify that the requester was authorized to act as the specified account. This could be used to solicit files or information from a recipient under a trusted identity; exploitation requires the feature to be enabled for the attacker's profile and the targeted recipient to act on the request.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-102107?

It affects 1 product.


Products: Accellion Kiteworks.

## How do I fix CVE-2026-102107?

No fix has been published for CVE-2026-102107 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-102107 being exploited?

There is no known exploitation of CVE-2026-102107 in the wild and no public exploit code.

## Other vulnerabilities in Accellion Kiteworks

- [CVE-2026-102115](https://insights.sbomify.com/CVE-2026-102115/): Kiteworks Core Authentication Bypass in the Password Reset Workflow (critical 9.8)
- [CVE-2026-102149](https://insights.sbomify.com/CVE-2026-102149/): Kiteworks Email Protection Gateway Improper Access Control (critical 9.4)
- [CVE-2026-102147](https://insights.sbomify.com/CVE-2026-102147/): Kiteworks Core Administrative Account Takeover through Stored Cross-site Scripting (XSS) (critical 9.3)
- [CVE-2026-102095](https://insights.sbomify.com/CVE-2026-102095/): Kiteworks Email Protection Gateway server-side request forgery (critical 9.1)
- [CVE-2026-102102](https://insights.sbomify.com/CVE-2026-102102/): Kiteworks Email Protection Gateway server-side request forgery (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-102107 and fix it if it is affected.

What it is: CVE-2026-102107 is a medium-severity vulnerability in Accellion Kiteworks, published on 30 Sep 2026. 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-2026-102107 in the wild and no public exploit code.

Affected product: Accellion Kiteworks. 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-2026-102107/ (Markdown: https://insights.sbomify.com/CVE-2026-102107/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-102107
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-102107
- OSV: https://osv.dev/vulnerability/CVE-2026-102107

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-102107/
Summaries are generated and may contain mistakes; the official description above is the record.