CVE-2026-23869 (GCVE-0-2026-23869)

Vulnerability from cvelistv5 – Published: 2026-04-08 19:11 – Updated: 2026-04-08 19:56
VLAI?
Summary
A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack (versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5, and 19.2.0 through 19.2.4). The vulnerability is triggered by sending specially crafted HTTP requests to Server Function endpoints.The payload of the HTTP request causes excessive CPU usage for up to a minute ending in a thrown error that is catchable.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • (CWE-502) Deserialization of Untrusted Data, (CWE-400) Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version
Meta react-server-dom-turbopack Affected: 19.0.0 , ≤ 19.0.4 (semver)
Affected: 19.1.0 , ≤ 19.1.5 (semver)
Affected: 19.2.0 , ≤ 19.2.4 (semver)
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    Meta react-server-dom-parcel Affected: 19.0.0 , ≤ 19.0.4 (semver)
Affected: 19.1.0 , ≤ 19.1.5 (semver)
Affected: 19.2.0 , ≤ 19.2.4 (semver)
Create a notification for this product.
    Meta react-server-dom-webpack Affected: 19.0.0 , ≤ 19.0.4 (semver)
Affected: 19.1.0 , ≤ 19.1.5 (semver)
Affected: 19.2.0 , ≤ 19.2.4 (semver)
Create a notification for this product.
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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.