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CVE-2026-44582

Next.js is a React framework for building full-stack web applications. From 13.4.6 to before 15.5.16 and 16.2.5, React Server Component responses can be vulnerable to cache poisoning in deployments that rely on shared caches with insufficient response partitioning. In affected conditions, collisions in the _rsc cache-busting value can allow an attacker to poison cache entries so users receive the wrong response variant for a given URL. This vulnerability is fixed in 15.5.16 and 16.2.5.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:16b64a32f824d835af1a8bbe36fc954d462ce757cd7b4bb222100e7d8d29b666
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":">= 13.4.6, < 15.5.16"},{"status":"affected","version":">= 16.0.0, < 16.2.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:627516fedece4f7b448af7001f1c5885abf53e860acd89202f9e92d2c1f913de · sha256:9cd37ceffa4b36b0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:627516fedece4f7b448af7001f1c5885abf53e860acd89202f9e92d2c1f913de · sha256:9cd37ceffa4b36b0… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-328","description":"CWE-328: Use of Weak Hash","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:627516fedece4f7b448af7001f1c5885abf53e860acd89202f9e92d2c1f913de · sha256:9cd37ceffa4b36b0… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/vercel/next.js/security/advisories/GHSA-vfv6-92ff-j949","tags":["x_refsource_CONFIRM"],"url":"https://github.com/vercel/next.js/security/advisories/GHSA-vfv6-92ff-j949"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:627516fedece4f7b448af7001f1c5885abf53e860acd89202f9e92d2c1f913de · sha256:9cd37ceffa4b36b0… · /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.

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