CVE-2026-78181: ractivejs ractive Keypath Ractive#set prototype pollution

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-24 · updated 2026-10-12
Weakness: CWE-94

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.

Affected products

ractivejs ractive: 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4

References

https://github.com/ractivejs/ractive/
https://github.com/ractivejs/ractive/issues/3448
https://vuldb.com/cve/CVE-2026-78181
https://vuldb.com/submit/884187
https://vuldb.com/vuln/394565
https://vuldb.com/vuln/394565/cti

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