CVE Explorer
CVE-2026-27978
Next.js is a React framework for building full-stack web applications. Starting in version 16.0.1 and prior to version 16.1.7, `origin: null` was treated as a "missing" origin during Server Action CSRF validation. As a result, requests from opaque contexts (such as sandboxed iframes) could bypass origin verification instead of being validated as cross-origin requests. An attacker could induce a victim browser to submit Server Actions from a sandboxed context, potentially executing state-changing
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"next.js","vendor":"vercel","versions":[{"status":"affected","version":">= 16.0.1, < 16.1.7"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:ed284d272b2761a542b7e04f8fe4df1df06ef56422a3d72341bf25fa02187296 · sha256:9d9350de9afb4c55… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:ed284d272b2761a542b7e04f8fe4df1df06ef56422a3d72341bf25fa02187296 · sha256:9d9350de9afb4c55… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-352","description":"CWE-352: Cross-Site Request Forgery (CSRF)","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:ed284d272b2761a542b7e04f8fe4df1df06ef56422a3d72341bf25fa02187296 · sha256:9d9350de9afb4c55… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/vercel/next.js/commit/a27a11d78e748a8c7ccfd14b7759ad2b9bf097d8","tags":["x_refsource_MISC"],"url":"https://github.com/vercel/next.js/commit/a27a11d78e748a8c7ccfd14b7759ad2b9bf097d8"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ed284d272b2761a542b7e04f8fe4df1df06ef56422a3d72341bf25fa02187296 · sha256:9d9350de9afb4c55… · /containers/cna/references/1
{"name":"https://github.com/vercel/next.js/releases/tag/v16.1.7","tags":["x_refsource_MISC"],"url":"https://github.com/vercel/next.js/releases/tag/v16.1.7"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ed284d272b2761a542b7e04f8fe4df1df06ef56422a3d72341bf25fa02187296 · sha256:9d9350de9afb4c55… · /containers/cna/references/2
{"name":"https://github.com/vercel/next.js/security/advisories/GHSA-mq59-m269-xvcx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/vercel/next.js/security/advisories/GHSA-mq59-m269-xvcx"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ed284d272b2761a542b7e04f8fe4df1df06ef56422a3d72341bf25fa02187296 · sha256:9d9350de9afb4c55… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.