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UNPWNED
CVE Radar
HighNext.js

CVE-2025-67779

It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests to Server Function endpoints. This can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.

CVSS Base Score
7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Probability
97%EPSS PERCENTILE0100

More exploitable than 97% of all CVEs · Top 3%

37%

of the sites UNPWNED scans run Next.js, the technology this CVE affects. Version determines exposure, so scan yours to know for sure.Aggregate across 730 scanned sites. No site is identified.

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Details
Published
2025-12-12
Last modified
2026-10-07
Affected
Next.js, React

Data from the National Vulnerability Database (NVD), CISA KEV, and FIRST.org EPSS. This product uses the NVD API but is not endorsed or certified by the NVD. EPSS is a probability estimate, not a guarantee of exploitation.