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CVE-2026-27623

A flaw was found in Valkey. A malicious actor with network access to Valkey can cause the system to shut down by sending a specially crafted request. This occurs because the system does not properly reset its networking state after processing an empty request, leading to an assertion failure. This vulnerability results in a Denial of Service (DoS), making the Valkey database unavailable.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:74dfa33808e99fbe2cdb468126e7bcbbe4116db1a0f4341eed6e59da8bf47cad
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"valkey","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/adp/1/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"valkey","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/adp/1/affected/0

{"product":"valkey","vendor":"valkey-io","versions":[{"status":"affected","version":">= 9.0.0, < 9.0.3"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/cna/affected/0
cwe · 2 assertions

{"cweId":"CWE-617","description":"Reachable Assertion","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/adp/1/problemTypes/0/descriptions/0

{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

3 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"valkey","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/adp/1/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"valkey","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/adp/1/affected/0
{"product":"valkey","vendor":"valkey-io","versions":[{"status":"affected","version":">= 9.0.0, < 9.0.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/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:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/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:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/adp/1/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-617","description":"Reachable Assertion","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/adp/1/problemTypes/0/descriptions/0
{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-27623"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/adp/1/references/0
{"name":"RHBZ#2442021","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2442021"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/adp/1/references/1
{"name":"https://github.com/valkey-io/valkey/security/advisories/GHSA-93p9-5vc7-8wgr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/valkey-io/valkey/security/advisories/GHSA-93p9-5vc7-8wgr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27623.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f7b04b0e61558ce6ab5f599342a7ee6a8913354a32b483736335423b9d7fdf71 · sha256:a0fee20e7e8f03d8… · /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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