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CVE-2026-25521

A prototype pollution flaw has been discovered in the Locutus npm library. Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using String.prototype.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6368a83d33c5ed78ef1c0d33522b0581a328bce8fe8a1a377cce6c49ae5198de
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
3

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 7 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/elasticsearch-rhel9-operator","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/elasticsearch-operator-bundle","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/elasticsearch-proxy-rhel9","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/2

{"product":"locutus","vendor":"locutusjs","versions":[{"status":"affected","version":">= 2.0.12, < 2.0.39"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/elasticsearch6-rhel9","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/logging-curator5-rhel9","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/5

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/kibana6-rhel8","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/4
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":9.4,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":9.3,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/metrics/1/cvssV3_1
cwe · 2 assertions

{"cweId":"CWE-1321","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-915","description":"Improperly Controlled Modification of Dynamically-Determined Object Attributes","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/problemTypes/0/descriptions/0

Affected products and versions

7 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/elasticsearch-rhel9-operator","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/elasticsearch-operator-bundle","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/elasticsearch-proxy-rhel9","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/2
{"product":"locutus","vendor":"locutusjs","versions":[{"status":"affected","version":">= 2.0.12, < 2.0.39"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/elasticsearch6-rhel9","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/logging-curator5-rhel9","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/5
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"],"defaultStatus":"unaffected","packageName":"openshift-logging/kibana6-rhel8","product":"Logging Subsystem for Red Hat OpenShift","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/affected/4

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":9.4,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":9.3,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-1321","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-915","description":"Improperly Controlled Modification of Dynamically-Determined Object Attributes","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-25521"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/references/0
{"name":"RHBZ#2436950","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2436950"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/references/1
{"name":"https://github.com/locutusjs/locutus/commit/042af9ca7fde2ff599120783e720a17f335bb01c","tags":["x_refsource_MISC"],"url":"https://github.com/locutusjs/locutus/commit/042af9ca7fde2ff599120783e720a17f335bb01c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/cna/references/1
{"name":"https://github.com/locutusjs/locutus/security/advisories/GHSA-rxrv-835q-v5mh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/locutusjs/locutus/security/advisories/GHSA-rxrv-835q-v5mh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25521.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:06375cee6a755ef7b8f3002cbb8e3435d2ec3716e801de6b03584f1d867d5e10 · sha256:a9492480561c9aff… · /containers/adp/1/references/2

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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