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Red Hat CVE-2026-27980

HIGH
Uncontrolled Resource Consumption (CWE-400)
2026-03-17 https://github.com/vercel/next.js GHSA-3x4c-7xq6-9pq8
Denial Of Service Red Hat
7.5
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Red Hat
5.3 MEDIUM
qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

4
PoC Detected
Mar 18, 2026 - 19:52 vuln.today
Public exploit code
Analysis Generated
Mar 17, 2026 - 20:30 vuln.today
Patch released
Mar 17, 2026 - 20:30 nvd
Patch available
CVE Published
Mar 17, 2026 - 16:17 nvd
HIGH 7.5

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 10 npm packages depend on next (9 direct, 1 indirect)

Ecosystem-wide dependent count for version 16.0.0-beta.0.

DescriptionGitHub Advisory

Summary

The default Next.js image optimization disk cache (/_next/image) did not have a configurable upper bound, allowing unbounded cache growth.

Impact

An attacker could generate many unique image-optimization variants and exhaust disk space, causing denial of service.

Patches

Fixed by adding an LRU-backed disk cache with images.maximumDiskCacheSize, including eviction of least-recently-used entries when the limit is exceeded. Setting maximumDiskCacheSize: 0 disables disk caching.

Workarounds

If upgrade is not immediately possible:

  • Periodically clean .next/cache/images.
  • Reduce variant cardinality (e.g., tighten values for images.localPatterns, images.remotePatterns, and images.qualities)

AnalysisAI

Next.js image optimization caches unbounded disk space by default, enabling attackers to exhaust storage and cause denial of service by requesting numerous image variants. The vulnerability affects applications using the default /_next/image optimization feature without explicit cache size limits. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Send requests for unique image variants
Exploit
Next.js generates optimization cache entries
Execution
Disk space exhausts without limit
Impact
Service becomes unavailable
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Vulnerability AssessmentAI

Exploitation Next.js application with default image optimization enabled at /_next/image endpoint and no maximumDiskCacheSize configuration limit set Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Service disruption affecting availability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker sends specially crafted requests that cause excessive resource consumption (CPU, memory, disk) or trigger a crash in the target application.
Remediation A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 7 days: Identify all affected systems and apply vendor patches promptly. …

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Vendor StatusVendor

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CVE-2026-27980 vulnerability details – vuln.today
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