- Essential React flaw (CVE-2025-55182) permits pre-auth RCE in React Server Elements
- Impacts variations 19.0–19.2.0 and frameworks like Subsequent, React Router, Vite; patches launched in 19.0.1, 19.1.2, 19.2.1
- Specialists warn exploitation is imminent with close to 100% success price; pressing upgrades strongly suggested
React is likely one of the hottest JavaScript libraries, which powers a lot of immediately’s web. Researchers not too long ago found a maximum-severity vulnerability. This bug may permit even the low-skilled risk actors to execute malicious code (RCE) on weak situations.
Earlier this week, the React crew printed a brand new safety advisory detailing a pre-authentication bug in a number of variations of a number of packs, affecting React Server Elements. The variations which are affected embody 19.0, 19.1.0, 19.1.1, and 19.2.0, of react-server-dom-webpack, react-server-dom-parcel, and react-server-dom-turbopack.
The bug is now tracked as CVE-2025-55182, and was given a severity rating of 10/10 (crucial).
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Exploitation imminent – little question about it
Default configurations of a number of React frameworks and bundlers are additionally affected by this bug, it was mentioned, together with subsequent, react-router, waku, @parcel/rsc, @vitejs/plugin-rsc, and rwsdk.
Variations which have addressed the bug are 19.0.1, 19.1.2, and 19.2.1, and React urges all customers to use the repair as quickly as attainable. "We suggest upgrading instantly," the React crew mentioned.
Based on The Register, React powers virtually two in 5 of all cloud environments, so the assault floor is giant, to place it mildly. Fb, Instagram, Netflix, Airbnb, Shopify, and different giants of immediately’s internet, all depend on React – in addition to tens of millions of different builders.
Benjamin Harris, founder and CEO of publicity administration instruments vendor watchTowr, instructed the publication that the flaw will “little question” be exploited within the wild. In truth, abuse is “imminent” he believes, particularly now that the advisory has been printed.
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Wiz managed to check the bug and says that “exploitation of this vulnerability had excessive constancy, with a close to 100% success price and could be leveraged to a full distant code execution”.
In different phrases, now is just not the time to slack – patching this flaw needs to be everybody’s primary precedence.
By way of The Register
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