CVE-2026-64645 Details
Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a
rewrites() or redirects() rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the rule's hostname suffix. For a rewrite, Next.js proxies the request to that arbitrary host and serves the response from the application's origin, leading to Server-Side Request forgery. A redirects() rule configured this way is vulnerable to an Open Redirect. This issue has been fixed in versions 15.5.21 and 16.2.11.
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Exploit prediction scoring system (EPSS) score for CVE-2026-64645
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.78 Probability of exploitation activity being observed over the next 30 days (53rd percentile)
CVSS score for CVE-2026-64645
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
6.1 Medium
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
More on DVE scores

CVE-2026-64645 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 228 21.78%
DE 139 13.28%
PT 108 10.32%
TR 66 6.30%
FR 57 5.44%
NL 46 4.39%
RU 45 4.30%
GB 45 4.30%
SG 35 3.34%
IR 30 2.87%

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CVE-2026-64645 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 736 84.60%
Government/Politics 68 7.82%
Telecommunications 54 6.21%
Manufacturing 7 0.80%
Finance 2 0.23%
Education 2 0.23%
Transportation 1 0.11%

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