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CVE-2026-23881

Kyverno is a policy engine designed for cloud native platform engineering teams. Versions prior to 1.16.3 and 1.15.3 have unbounded memory consumption in Kyverno's policy engine that allows users with policy creation privileges to cause denial of service by crafting policies that exponentially amplify string data through context variables. Versions 1.16.3 and 1.15.3 contain a patch for the vulnerability.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c6c7ac850fa4b0ccabf702854f5cf3bcf7998a8cd18f138561a0cbfabff28ec2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"kyverno","vendor":"kyverno","versions":[{"status":"affected","version":"< 1.15.3"},{"status":"affected","version":">= 1.16.0, < 1.16.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:40993517d38be7dd5c4ee62a712a8483ed5f1576da084880af54a8d80ec546a2 · sha256:4be75de49f12229a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:40993517d38be7dd5c4ee62a712a8483ed5f1576da084880af54a8d80ec546a2 · sha256:4be75de49f12229a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:40993517d38be7dd5c4ee62a712a8483ed5f1576da084880af54a8d80ec546a2 · sha256:4be75de49f12229a… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850f","tags":["x_refsource_MISC"],"url":"https://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:40993517d38be7dd5c4ee62a712a8483ed5f1576da084880af54a8d80ec546a2 · sha256:4be75de49f12229a… · /containers/cna/references/1
{"name":"https://github.com/kyverno/kyverno/commit/f5617f60920568a301740485472bf704892175b7","tags":["x_refsource_MISC"],"url":"https://github.com/kyverno/kyverno/commit/f5617f60920568a301740485472bf704892175b7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:40993517d38be7dd5c4ee62a712a8483ed5f1576da084880af54a8d80ec546a2 · sha256:4be75de49f12229a… · /containers/cna/references/2
{"name":"https://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mq"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:40993517d38be7dd5c4ee62a712a8483ed5f1576da084880af54a8d80ec546a2 · sha256:4be75de49f12229a… · /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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