CVE-2026-107910: critical vulnerability in FalkorDB
Authentication bypass in FalkorDB Bolt endpoint via fail-open AUTH probe error handling
Published
25Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.2
exploitation probability
—
observed exploitation
nono source reports it
An improper authentication vulnerability in the is_authenticated function (src/bolt/bolt_api.c) in FalkorDB before 4.20.0 allows a remote unauthenticated attacker to execute graph queries without credentials through the Bolt endpoint. The function decides whether a password is required by issuing an empty AUTH command to Redis and treats only a WRONGPASS error as meaning that a password is required; any other error, such as LOADING while a dataset is being loaded, MASTERDOWN during replication failover, or OOM under memory pressure, causes the client to be treated as authenticated. Only deployments that enable the Bolt endpoint (BOLT_PORT, disabled by default) are affected.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
FalkorDB · FalkorDBRelated CVEs — FalkorDB
In the same product, most dangerous first.
CVE-2026-107911HIGHType confusion in FalkorDB GRAPH.QUERY via the --bolt argumentEPSS —CVE-2026-107909HIGHPre-authentication heap out-of-bounds write in FalkorDB Bolt WebSocket frame handling via unbounded payload lengthEPSS —CVE-2026-107908CRITICALPre-authentication heap out-of-bounds write in FalkorDB Bolt BoltReadHandler via RESET messageEPSS —CVE-2026-7826HIGHHeap out-of-bounds read in FalkorDB BufferSerializerIOv2_ReadBuffer via crafted RDBEPSS —CVE-2026-7827CRITICALStack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in crafted RDBEPSS —CVE-2026-5759CRITICALDouble free and use-after-free in FalkorDB RdbLoadDeletedNodes allows remote code execution via crafted RDBEPSS —