CVE-2025-55183: medium-severity vulnerability in Meta react-server-dom-parcel
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
25Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 64%
What the vendors declare (VEX)
Official vendor statements in CSAF/VEX format: whether their product is affected, already fixed, or ruled out — and why. These are the vendor's assertions, not Vexday's judgment.
Red HatVEX document ↗
Not affected
8 products (32 components) — because the vulnerable code is not present in the product
Red Hat Enterprise Linux 9 · Red Hat Enterprise Linux 10 · Red Hat Enterprise Linux 8 · Red Hat Enterprise Linux 7 · Red Hat Enterprise Linux AI (RHEL AI) 3 · and others 3
An information leak vulnerability exists in specific configurations of React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. A specifically crafted HTTP request sent to a vulnerable Server Function may unsafely return the source code of any Server Function. Exploitation requires the existence of a Server Function which explicitly or implicitly exposes a stringified argument.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
Meta · react-server-dom-parcelMeta · react-server-dom-turbopackMeta · react-server-dom-webpackRelated CVEs — Meta react-server-dom-parcel
In the same product, most dangerous first.