{"id":"CVE-2026-21864","state":"PUBLISHED","title":"Remote DoS from malformed RESTORE command","description":"Valkey-Bloom is a Rust based Valkey module which brings a Bloom Filter (Module) data type into the Valkey distributed key-value database. Prior to commit a68614b6e3845777d383b3a513cedcc08b3b7ccd, a specially crafted `RESTORE` command can cause Valkey to hit an assertion, causes the server to shutdown. Valkey modules are required to handle errors in RDB parsing by using `VALKEYMODULE_OPTIONS_HANDLE_IO_ERRORS` flag. If this flag is not set, errors encountered during parsing result in a system assertion which shuts down the system. Even though the Valkey-bloom module correctly handled the parsing, it did not originally set the flag. Commit a68614b6e3845777d383b3a513cedcc08b3b7ccd contains a patch. One may mitigate this defect by disabling the `RESTORE` command if it is unused by one's application.","publishedAt":"2026-02-24T00:24:15.677Z","updatedAt":"2026-02-26T14:38:37.387Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["valkey-io valkey-bloom"],"affected":[{"vendor":"valkey-io","product":"valkey-bloom","versions":[{"version":"< a68614b6e3845777d383b3a513cedcc08b3b7ccd","status":"affected"}]}],"references":["https://github.com/valkey-io/valkey-bloom/security/advisories/GHSA-mc2g-h759-3qw2","https://github.com/valkey-io/valkey-bloom/commit/a68614b6e3845777d383b3a513cedcc08b3b7ccd"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/21xxx/CVE-2026-21864.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-21864","state":"PUBLISHED","datePublished":"2026-02-24T00:24:15.677Z","dateUpdated":"2026-02-26T14:38:37.387Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-01-05T16:44:16.367Z"},"containers":{"cna":{"title":"Remote DoS from malformed RESTORE command","descriptions":[{"lang":"en","value":"Valkey-Bloom is a Rust based Valkey module which brings a Bloom Filter (Module) data type into the Valkey distributed key-value database. Prior to commit a68614b6e3845777d383b3a513cedcc08b3b7ccd, a specially crafted `RESTORE` command can cause Valkey to hit an assertion, causes the server to shutdown. Valkey modules are required to handle errors in RDB parsing by using `VALKEYMODULE_OPTIONS_HANDLE_IO_ERRORS` flag. If this flag is not set, errors encountered during parsing result in a system assertion which shuts down the system. Even though the Valkey-bloom module correctly handled the parsing, it did not originally set the flag. Commit a68614b6e3845777d383b3a513cedcc08b3b7ccd contains a patch. One may mitigate this defect by disabling the `RESTORE` command if it is unused by one's application."}],"affected":[{"vendor":"valkey-io","product":"valkey-bloom","versions":[{"version":"< a68614b6e3845777d383b3a513cedcc08b3b7ccd","status":"affected"}]}],"references":[{"url":"https://github.com/valkey-io/valkey-bloom/security/advisories/GHSA-mc2g-h759-3qw2","name":"https://github.com/valkey-io/valkey-bloom/security/advisories/GHSA-mc2g-h759-3qw2","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/valkey-io/valkey-bloom/commit/a68614b6e3845777d383b3a513cedcc08b3b7ccd","name":"https://github.com/valkey-io/valkey-bloom/commit/a68614b6e3845777d383b3a513cedcc08b3b7ccd","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-02-24T00:24:15.677Z"},"source":{"advisory":"GHSA-mc2g-h759-3qw2","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-26T14:37:52.971674Z","id":"CVE-2026-21864","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-26T14:38:37.387Z"}}]}}}