CVE-2025-67733: high-severity vulnerability in valkey-io valkey
Valkey Affected by RESP Protocol Injection via Lua error_reply
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.5epss 0.6%
Valkey is a distributed key-value database. Prior to versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12, a malicious user can use scripting commands to inject arbitrary information into the response stream for the given client, potentially corrupting or returning tampered data to other users on the same connection. The error handling code for lua scripts does not properly handle null characters. Versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12 fix the issue.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
Affected products
valkey-io · valkeyRelated CVEs — valkey-io valkey
In the same product, most dangerous first.
CVE-2026-63639HIGHValkey: UAF in stream deserialization may lead to remote code executionEPSS 0.9%CVE-2026-85522MEDIUMvalkey-io valkey Slot Migration cluster_migrateslots.c createSlotImportJob out-of-boundsEPSS 0.9%CVE-2026-21863HIGHMalformed Valkey Cluster bus message can lead to Remote DoSEPSS 0.8%CVE-2026-86227LOWvalkey-io valkey kvstore.c kvstoreGetHashtable out-of-boundsEPSS 0.5%CVE-2026-56684HIGHValkey: TLS pending-data processing use-after-free may allow remote code executionEPSS 0.5%CVE-2026-27623HIGHValkey has Pre-Authentication DOS from malformed RESP requestEPSS 0.4%
References
https://access.redhat.com/errata/RHSA-2026:3443https://access.redhat.com/errata/RHSA-2026:3507https://access.redhat.com/errata/RHSA-2026:5445https://access.redhat.com/security/cve/CVE-2025-67733https://bugzilla.redhat.com/show_bug.cgi?id=2442025https://github.com/valkey-io/valkey/security/advisories/GHSA-p876-p7q5-hv2mhttps://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-67733.json