CVE-2025-55183An information leak vulnerability exists in specific configurations of React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1,…
- 5.3MediumCVSS base score
- 61.9%Exploitation in 30 daysEPSS · top 0.8% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By Meta
- 4 months later
· 4 months later
Published
- 27 days later
· 27 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| MetaCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Analyzed | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 61.9% · top 0.8% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
Meta · react-server-dom-webpack
- affected 19.0.0 – ≤ 19.0.1
- affected 19.1.0 – ≤ 19.1.2
- affected 19.2.0 – ≤ 19.2.1
Meta · react-server-dom-turbopack
- affected 19.0.0 – ≤ 19.0.1
- affected 19.1.0 – ≤ 19.1.2
- affected 19.2.0 – ≤ 19.2.1
Meta · react-server-dom-parcel
- affected 19.0.0 – ≤ 19.0.1
- affected 19.1.0 – ≤ 19.1.2
- affected 19.2.0 – ≤ 19.2.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmreact-server-dom-parcelGHSA-925w-6v3x-g4j4 (opens in a new tab)
- npmreact-server-dom-turbopackGHSA-925w-6v3x-g4j4 (opens in a new tab)
- npmreact-server-dom-webpackGHSA-925w-6v3x-g4j4 (opens in a new tab)
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-202879 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-925w-6v3x-g4j4 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-55183)Record last updated .