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01 Record

CVE-2026-23869

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

HighPUBLISHEDCNA: Meta
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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02 Description

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

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.55% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 74.5% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-07-25.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-04-08 19:11Z6 MO AGO
Last updated
2026-07-15 01:17Z3 MO AGO
Reserved
2026-01-16
Assigning CNA
Meta
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-400Uncontrolled Resource ConsumptionClass
  • CWE-502Deserialization of Untrusted DataBase
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.2
Document digest
0cf5c62b62d620608316a0a754a098fb293fbef8de3951838d0e0e03c231bd74

05 Affected products

VendorProductVersionsPlatforms
Metareact-server-dom-turbopack19.0.0 to 19.0.4, 19.1.0 to 19.1.5, 19.2.0 to 19.2.4—
Metareact-server-dom-parcel19.0.0 to 19.0.4, 19.1.0 to 19.1.5, 19.2.0 to 19.2.4—
Metareact-server-dom-webpack19.0.0 to 19.0.4, 19.1.0 to 19.1.5, 19.2.0 to 19.2.4—

06 References