CVE-2021-26859 Microsoft Power BI Information Disclosure Vulnerability
High 7.7
Published
Updated
Check this codebase for CVE-2021-26859 and fix it if it is affected.
What it is: CVE-2021-26859 is a high-severity vulnerability in Microsoft Power BI Report Server version 15.0.1103.234, published on 11 Mar 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-2021-26859 in the wild and no public exploit code.
Affected product: Microsoft Power BI Report Server version 15.0.1103.234. 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-2021-26859/ (Markdown: https://insights.sbomify.com/CVE-2021-26859/index.md)
An attacker can exploit this vulnerability in Microsoft Power BI Report Server to disclose sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-26859?
CVE-2021-26859 is a high-severity vulnerability in Microsoft Power BI Report Server version 15.0.1103.234, published on 11 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Microsoft Power BI Information Disclosure Vulnerability
Which versions are affected by CVE-2021-26859?
It affects 1 product.
Products include Microsoft Power Bi Report Server.
How do I fix CVE-2021-26859?
No fix has been published for CVE-2021-26859 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-26859 being exploited?
There is no known exploitation of CVE-2021-26859 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Power BI Report Server version 15.0.1103.234
- CVE-2026-65811 Power BI Remote Code Execution Vulnerability
- CVE-2023-21806 Power BI Report Server Spoofing Vulnerability
- CVE-2026-58647 Microsoft PowerBI Report Server Spoofing Vulnerability
- CVE-2026-21229 Power BI Remote Code Execution Vulnerability
- CVE-2021-41372 Power BI Report Server Spoofing Vulnerability
Sources
Also known as GHSA-8ff9-hr9f-57m5.