CVE-2026-82387 Apache Roller: Stored cross-site scripting via uploaded media content type
Attackers with upload rights can store malicious scripts in media files, leading to code execution when victims view them in enabled installations.
- 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
- None listed
What is CVE-2026-82387?
CVE-2026-82387 is a medium-severity cross-site scripting vulnerability in Apache Roller, published on 28 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
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Roller 6.1.5 allows a user with media-upload rights to store active content on Roller's origin, because the media upload feature trusts the upload-supplied content type and serves the stored file back with that type. A victim who opens the uploaded file executes the stored script. Media uploads are disabled by default; only installations that enable them are affected, and the shipped type restrictions do not block active content once uploads are on. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which derives the stored type from file content and serves non-image media as a download.
Weakness: CWE-79
Which versions are affected by CVE-2026-82387?
How do I fix CVE-2026-82387?
No fix has been published for CVE-2026-82387 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-82387 being exploited?
There is no known exploitation of CVE-2026-82387 in the wild and no public exploit code.
Sources
Also known as GHSA-cp7g-8wv7-92w2.