CVE-2021-26799 Cross-site scripting in n/a

Q: Is CVE-2021-26799 being exploited?

There is no known exploitation of CVE-2021-26799 in the wild and no public exploit code.

Q: How do I fix CVE-2021-26799?

No fix has been published for CVE-2021-26799 yet. Limit exposure of the affected software until one is available.

Medium 6.1 Published 23 Jul 2021 Updated 3 Aug 2024

Remote attackers can inject arbitrary web script or HTML via the admin file editor in Omeka Classic, potentially compromising user sessions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-26799?

CVE-2021-26799 is a medium-severity cross-site scripting vulnerability in n/a, published on 23 Jul 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross Site Scripting (XSS) vulnerability in admin/files/edit in Omeka Classic <=2.7 allows remote attackers to inject arbitrary web script or HTML.

Weakness: CWE-79

Which versions are affected by CVE-2021-26799?

It affects 1 product.

Products include Omeka Omeka.

How do I fix CVE-2021-26799?

No fix has been published for CVE-2021-26799 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-2021-26799 being exploited?

There is no known exploitation of CVE-2021-26799 in the wild and no public exploit code.

Sources

Also known as GHSA-p9cm-p38f-27vm.