CVE-2026-7827 Stack-based buffer overflow in FalkorDB _RdbLoadEntity via unbounded property count in crafted RDB
Remote attackers can cause denial of service or execute arbitrary code via crafted RDB streams in FalkorDB graph decoders.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-7827?
CVE-2026-7827 is a critical memory corruption vulnerability in FalkorDB, published on 9 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A stack-based buffer overflow in the _RdbLoadEntity function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.4 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no password configured) to cause a denial of service and possibly execute arbitrary code by supplying a crafted RDB stream with an attacker-controlled entity property count. The count sizes two variable-length arrays on the thread stack with no upper bound, and the decoder then fills them with attacker-supplied values.
Weakness: CWE-121
Which versions are affected by CVE-2026-7827?
How do I fix CVE-2026-7827?
No fix has been published for CVE-2026-7827 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-7827 being exploited?
There is no known exploitation of CVE-2026-7827 in the wild and no public exploit code.
Sources
Also known as GHSA-fwp9-2ghh-pw8g.