CVE-2026-23870
A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could…
- Published
- Updated
- Reserved
- Assigned by
- Meta
Description
A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to server crashes, out-of-memory exceptions or excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.5, 19.1.0 through 19.1.6, and 19.2.0 through 19.2.5).
Timeline
ID reserved
By Meta
- 4 months later
· 4 months later
Published
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 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.5% · top 25% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- (CWE-502) Deserialization of Untrusted Data, (CWE-400) Uncontrolled Resource Consumption
- CWE-400 (opens in a new tab)All about CWE-400 and its CVEs
Affected products
Meta · react-server-dom-turbopack
- affected 19.0.0 – ≤ 19.0.5
- affected 19.1.0 – ≤ 19.1.6
- affected 19.2.0 – ≤ 19.2.5
Meta · react-server-dom-parcel
- affected 19.0.0 – ≤ 19.0.5
- affected 19.1.0 – ≤ 19.1.6
- affected 19.2.0 – ≤ 19.2.5
Meta · react-server-dom-webpack
- affected 19.0.0 – ≤ 19.0.5
- affected 19.1.0 – ≤ 19.1.6
- affected 19.2.0 – ≤ 19.2.5
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmreact-server-dom-parcelGHSA-rv78-f8rc-xrxh (opens in a new tab)
- npmreact-server-dom-turbopackGHSA-rv78-f8rc-xrxh (opens in a new tab)
- npmreact-server-dom-webpackGHSA-rv78-f8rc-xrxh (opens in a new tab)
References (1)
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)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-rv78-f8rc-xrxh (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-23870)Record last updated .