CVE-2023-1107 Cross-site Scripting (XSS) - Stored in flatpressblog/flatpress

Medium 6.5 Published 2 Mar 2023 Updated 7 Mar 2025

Attackers can inject malicious scripts into FlatPress blogs, potentially stealing user sessions or executing code in victim browsers.

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-2023-1107?

CVE-2023-1107 is a medium-severity cross-site scripting vulnerability in flatpressblog/flatpress, published on 2 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Cross-site Scripting (XSS) - Stored in GitHub repository flatpressblog/flatpress prior to 1.3.

Weakness: CWE-79

Which versions are affected by CVE-2023-1107?

It affects 1 product.

Products include Flatpress Flatpress.

How do I fix CVE-2023-1107?

No fix has been published for CVE-2023-1107 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-2023-1107 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1107 exists.

Sources

Also known as GHSA-wxm5-xhhw-9jfc.