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CVE-2026-54775

CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, a CoreWCF service listening on a Kafka topic stops processing new records from that topic when KafkaTransportPump receives a null-value tombstone record, causing a persistent endpoint denial of service for attackers with produce permission. This issue is fixed in versions 1.8.1 and 1.9.1.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2392ec0265c6bc7e5203a36d40919f5afcdd9598409b2fa96f6cbcb247807ba3
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-755","description":"CWE-755: Improper Handling of Exceptional Conditions","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-754","description":"CWE-754: Improper Check for Unusual or Exceptional Conditions","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"CoreWCF","vendor":"CoreWCF","versions":[{"status":"affected","version":">= 1.9.0, < 1.9.1"},{"status":"affected","version":"< 1.8.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-755","description":"CWE-755: Improper Handling of Exceptional Conditions","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-754","description":"CWE-754: Improper Check for Unusual or Exceptional Conditions","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/problemTypes/1/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/CoreWCF/CoreWCF/commit/1a229d0d14a07766302f7d14c866889f04a3a624","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/commit/1a229d0d14a07766302f7d14c866889f04a3a624"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/references/1
{"name":"https://github.com/CoreWCF/CoreWCF/commit/6d7431ebc0ebe6521ea6d0dbea8982bac3d2bc98","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/commit/6d7431ebc0ebe6521ea6d0dbea8982bac3d2bc98"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/references/2
{"name":"https://github.com/CoreWCF/CoreWCF/commit/8f95f3ac3c929409e830b5c5659683ef9f6ea6b0","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/commit/8f95f3ac3c929409e830b5c5659683ef9f6ea6b0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/references/3
{"name":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/references/4
{"name":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /containers/cna/references/5
{"name":"https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-m744-jhq9-ppw6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-m744-jhq9-ppw6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d6f0469e85fbf0630cfa62119e5eedc687507a81cd677618def2c235bc64bf5b · sha256:17484f9ed05d9582… · /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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