Evidence dossier

CVE-2025-55182

CVE-2025-55182

85.0–100.0Priority evidence range

As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints.

State: PUBLISHED
Published: Dec 3, 2025
Updated: Feb 26, 2026
Evidence coverage: 85%

CISA KEVCatalog member

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

FIRST EPSS99.56%

2026-07-18 · v2026.06.15 · percentile 99.9%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment

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CISA ADP Vulnrichment

Jul 19, 2026Original evidence ↗

CVEderivative copy

container

CVE Program Container

Jul 19, 2026Original evidence ↗

Metaoriginal assertion

container

A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints.

Jul 19, 2026Original evidence ↗

CISA KEVoriginal assertion

observed_exploitation

Meta React Server Components Remote Code Execution Vulnerability

Jul 19, 2026Original evidence ↗

FIRST EPSSoriginal assertion

model_probability

Probability 0.995620000000; percentile 0.999420000000

Jul 19, 2026Original evidence ↗

Applicability

Cited product scope

Trace impact →

Metareact-server-dom-parcel

[{"status": "affected", "version": "19.0.0", "versionType": "semver", "lessThanOrEqual": "19.0.0"}, {"status": "affected", "version": "19.1.0", "versionType": "semver", "lessThanOrEqual": "19.1.1"}, {"status": "affected", "version": "19.2.0", "versionType": "semver", "lessThanOrEqual": "19.2.0"}]

unknown

Metareact-server-dom-turbopack

[{"status": "affected", "version": "19.0.0", "versionType": "semver", "lessThanOrEqual": "19.0.0"}, {"status": "affected", "version": "19.1.0", "versionType": "semver", "lessThanOrEqual": "19.1.1"}, {"status": "affected", "version": "19.2.0", "versionType": "semver", "lessThanOrEqual": "19.2.0"}]

unknown

Metareact-server-dom-webpack

[{"status": "affected", "version": "19.0.0", "versionType": "semver", "lessThanOrEqual": "19.0.0"}, {"status": "affected", "version": "19.1.0", "versionType": "semver", "lessThanOrEqual": "19.1.1"}, {"status": "affected", "version": "19.2.0", "versionType": "semver", "lessThanOrEqual": "19.2.0"}]

unknown

Unknown vendorUnknown product

cpe:2.3:a:facebook:react:19.0.0:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:facebook:react:19.1.0:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:facebook:react:19.1.1:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:facebook:react:19.2.0:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary77:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary78:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary79:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary80:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary81:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary82:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary83:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary84:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary85:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary86:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:14.3.0:canary87:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary0:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary10:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary11:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary12:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary13:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary14:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary15:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary16:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary17:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary18:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary19:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary1:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary20:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary21:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary22:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary23:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary24:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary25:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary26:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary27:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary28:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary29:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary2:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary30:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary31:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary32:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary33:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary34:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary35:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary36:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary37:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary38:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary39:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary3:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary40:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary41:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary42:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary43:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary44:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary45:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary46:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary47:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary48:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary49:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary4:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary50:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary51:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary52:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary53:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary54:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary55:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary56:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary57:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary5:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary6:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary7:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary8:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:canary9:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:15.6.0:-:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:16.0.0:-:*:*:*:node.js:*:*supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*; start including 15.0.0; end excluding 15.0.5supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*; start including 15.1.0; end excluding 15.1.9supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*; start including 15.2.0; end excluding 15.2.6supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*; start including 15.3.0; end excluding 15.3.6supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*; start including 15.4.0; end excluding 15.4.8supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*; start including 15.5.0; end excluding 15.5.7supported

Unknown vendorUnknown product

cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*; start including 16.0.0; end excluding 16.0.7supported

Assessments

CVSS by origin

10.0

cve-assign@fb.comCVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

10.0

MetaCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Limitations and unknowns

KEV membership is authoritative for the catalog, not proof of exposure in any environment.
EPSS is a dated model probability and not an individual-environment prediction.
Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
NVD-carried upstream facts remain derivative and are not independent corroboration.
Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.