Uncontrolled resource consumption in Meta react-server-dom-webpack
Priority MEDIUM 44CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service, Code execution
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400 and CWE-502.
Summary
Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack. The vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code. Strongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in applications using React Server Components.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02581 85th percentileScored 2026-11-07
Fix Fixed react-server-dom-webpack (Meta): 19.0.4, 19.1.5, 19.2.4react-server-dom-turbopack (Meta): 19.0.4, 19.1.5, 19.2.4+4 more productsRed Hat: 2 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Meta | react-server-dom-webpack | 19.0.0 to before 19.0.4; 19.1.0 to before 19.1.5; 19.2.0 to before 19.2.4 | 19.0.4, 19.1.5, 19.2.4 | Patch available | CNA |
| Meta | react-server-dom-turbopack | 19.0.0 to before 19.0.4; 19.1.0 to before 19.1.5; 19.2.0 to before 19.2.4 | 19.0.4, 19.1.5, 19.2.4 | Patch available | CNA |
| Meta | react-server-dom-parcel | 19.0.0 to before 19.0.4; 19.1.0 to before 19.1.5; 19.2.0 to before 19.2.4 | 19.0.4, 19.1.5, 19.2.4 | Patch available | CNA |
| — | react-server-dom-parcel (npm) | 19.0.0 to before 19.0.4 | 19.0.4 | Patch available | GHSA-83fc-fqcc-2hmg |
| — | react-server-dom-turbopack (npm) | 19.1.0-canary-7130d0c6-20241212 to before 19.1.5 | 19.1.5 | Patch available | GHSA-83fc-fqcc-2hmg |
| — | react-server-dom-webpack (npm) | 19.2.0-canary-63779030-20250328 to before 19.2.4 | 19.2.4 | Patch available | GHSA-83fc-fqcc-2hmg |
| — | react-server-dom-turbopack (npm) | 19.0.0 to before 19.0.4 | 19.0.4 | Patch available | GHSA-83fc-fqcc-2hmg |
| — | react-server-dom-parcel (npm) | 19.1.0-canary-7130d0c6-20241212 to before 19.1.5 | 19.1.5 | Patch available | GHSA-83fc-fqcc-2hmg |
| — | react-server-dom-parcel (npm) | 19.2.0-canary-63779030-20250328 to before 19.2.4 | 19.2.4 | Patch available | GHSA-83fc-fqcc-2hmg |
| — | react-server-dom-webpack (npm) | 19.1.0-canary-7130d0c6-20241212 to before 19.1.5 | 19.1.5 | Patch available | GHSA-83fc-fqcc-2hmg |
| — | react-server-dom-webpack (npm) | 19.0.0 to before 19.0.4 | 19.0.4 | Patch available | GHSA-83fc-fqcc-2hmg |
| — | react-server-dom-turbopack (npm) | 19.2.0-canary-63779030-20250328 to before 19.2.4 | 19.2.4 | Patch available | GHSA-83fc-fqcc-2hmg |
- react-server-dom-webpack VendorMeta Affected 19.0.0 to before 19.0.4; 19.1.0 to before 19.1.5; 19.2.0 to before 19.2.4 Fixed in 19.0.4, 19.1.5, 19.2.4 Patch available CNA
- react-server-dom-turbopack VendorMeta Affected 19.0.0 to before 19.0.4; 19.1.0 to before 19.1.5; 19.2.0 to before 19.2.4 Fixed in 19.0.4, 19.1.5, 19.2.4 Patch available CNA
- react-server-dom-parcel VendorMeta Affected 19.0.0 to before 19.0.4; 19.1.0 to before 19.1.5; 19.2.0 to before 19.2.4 Fixed in 19.0.4, 19.1.5, 19.2.4 Patch available CNA
- react-server-dom-parcel (npm) Vendor— Affected 19.0.0 to before 19.0.4 Fixed in 19.0.4 Patch available GHSA-83fc-fqcc-2hmg
- react-server-dom-turbopack (npm) Vendor— Affected 19.1.0-canary-7130d0c6-20241212 to before 19.1.5 Fixed in 19.1.5 Patch available GHSA-83fc-fqcc-2hmg
- react-server-dom-webpack (npm) Vendor— Affected 19.2.0-canary-63779030-20250328 to before 19.2.4 Fixed in 19.2.4 Patch available GHSA-83fc-fqcc-2hmg
- react-server-dom-turbopack (npm) Vendor— Affected 19.0.0 to before 19.0.4 Fixed in 19.0.4 Patch available GHSA-83fc-fqcc-2hmg
- react-server-dom-parcel (npm) Vendor— Affected 19.1.0-canary-7130d0c6-20241212 to before 19.1.5 Fixed in 19.1.5 Patch available GHSA-83fc-fqcc-2hmg
- react-server-dom-parcel (npm) Vendor— Affected 19.2.0-canary-63779030-20250328 to before 19.2.4 Fixed in 19.2.4 Patch available GHSA-83fc-fqcc-2hmg
- react-server-dom-webpack (npm) Vendor— Affected 19.1.0-canary-7130d0c6-20241212 to before 19.1.5 Fixed in 19.1.5 Patch available GHSA-83fc-fqcc-2hmg
- react-server-dom-webpack (npm) Vendor— Affected 19.0.0 to before 19.0.4 Fixed in 19.0.4 Patch available GHSA-83fc-fqcc-2hmg
- react-server-dom-turbopack (npm) Vendor— Affected 19.2.0-canary-63779030-20250328 to before 19.2.4 Fixed in 19.2.4 Patch available GHSA-83fc-fqcc-2hmg
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:* | 19.0.0 to before 19.0.4; 19.1.0 to before 19.1.5; 19.2.0 to before 19.2.4 | Vulnerable | Meta |
- cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:* Versions 19.0.0 to before 19.0.4; 19.1.0 to before 19.1.5; 19.2.0 to before 19.2.4 Vulnerable ·Meta
Remediation
- Fix · CNA react-server-dom-webpack (Meta) Fixed in 19.0.4, 19.1.5, 19.2.4
- Fix · CNA react-server-dom-turbopack (Meta) Fixed in 19.0.4, 19.1.5, 19.2.4
- Fix · CNA react-server-dom-parcel (Meta) Fixed in 19.0.4, 19.1.5, 19.2.4
- Fix · GHSA-83fc-fqcc-2hmg react-server-dom-parcel (npm) Fixed in 19.0.4 Advisory →
- Fix · GHSA-83fc-fqcc-2hmg react-server-dom-turbopack (npm) Fixed in 19.1.5 Advisory →
- Fix · GHSA-83fc-fqcc-2hmg react-server-dom-webpack (npm) Fixed in 19.2.4 Advisory →
- Fix · GHSA-83fc-fqcc-2hmg react-server-dom-turbopack (npm) Fixed in 19.0.4 Advisory →
- Fix · GHSA-83fc-fqcc-2hmg react-server-dom-parcel (npm) Fixed in 19.1.5 Advisory →
- Fix · GHSA-83fc-fqcc-2hmg react-server-dom-parcel (npm) Fixed in 19.2.4 Advisory →
- Fix · GHSA-83fc-fqcc-2hmg react-server-dom-webpack (npm) Fixed in 19.1.5 Advisory →
- Fix · GHSA-83fc-fqcc-2hmg react-server-dom-webpack (npm) Fixed in 19.0.4 Advisory →
- Fix · GHSA-83fc-fqcc-2hmg react-server-dom-turbopack (npm) Fixed in 19.2.4 Advisory →
Red Hat 2 advisories
- RHSA-2026:34608 Released 2026-07-02 · Red Hat rating ImportantStreams for Apache Kafka 2.9.4 release and security update
- Streams for Apache Kafka 2.9.4
- RHSA-2026:13571 Released 2026-05-04 · Red Hat rating CriticalStreams for Apache Kafka 3.2.0 release and security update
- Streams for Apache Kafka 3.2.0
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Streams for Apache Kafka 2.9.4 | Fixed | RHSA-2026:34608 |
| Streams for Apache Kafka 3.2.0 | Fixed | RHSA-2026:13571 |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-23864
- 2026-10-03 Alias added: GHSA-83fc-fqcc-2hmg
References
Advisory 2
More Meta React vulnerabilities
- TI-2025-34861 Deserialization of untrusted data in Meta react-server-dom-webpack KEVCVSS 3.1CRITICAL 10.0
- TI-2025-34863 Deserialization of untrusted data in Meta react-server-dom-webpack CVSS 3.1HIGH 7.5
- TI-2025-34862 Deserialization of untrusted data in Meta react-server-dom-webpack CVSS 3.1MEDIUM 5.3
- TI-2025-41449 Uncontrolled resource consumption in Meta react-server-dom-parcel CVSS 3.1HIGH 7.5
- TI-2018-04665 Cross-site scripting in Meta react-dom CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-23864 · CVE Program
- CVE-2026-23864 · NVD
- FIRST EPSS
- GHSA-83fc-fqcc-2hmg · GitHub Advisory Database · CC BY 4.0
- CVE-2026-23864 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences