CVE-2026-88420 Cross-site scripting in n/a
Authenticated attackers with editor privileges can execute arbitrary code in victim browsers via reflected XSS in the Puput blog plugin.
- 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-2026-88420?
CVE-2026-88420 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 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
A reflected cross-site scripting (XSS) vulnerability in the EntryAbstract.save() component of APSL puput v1.2.1 through v2.2.0 allows authenticated attackers with Wagtail Editor privileges to execute arbitrary code in the context of the victim's browser via a crafted payload.
Weakness: CWE-79
Which versions are affected by CVE-2026-88420?
How do I fix CVE-2026-88420?
No fix has been published for CVE-2026-88420 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-2026-88420 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88420 exists.
Sources
Also known as GHSA-2w4j-r762-9783.