CVE-2026-78181 ractivejs ractive Keypath Ractive#set prototype pollution
Remote attackers can exploit prototype pollution in Ractive#set to execute arbitrary code or escalate privileges within applications using the library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78181?
CVE-2026-78181 is a medium-severity code injection vulnerability in ractivejs ractive, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A weakness has been identified in ractivejs ractive up to 1.4.4. Impacted is the function Ractive#set of the component Keypath Handler. Executing a manipulation can lead to improperly controlled modification of object prototype attributes. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-78181?
How do I fix CVE-2026-78181?
No fix has been published for CVE-2026-78181 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-78181 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-78181 exists.
Sources
Also known as GHSA-66g2-xvjx-x9j9.