Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Redisson, the Java Redis client, is vulnerable to unsafe deserialization in versions before 3.22.0. An attacker who can get a client to talk to a malicious Redis server can send crafted Java objects that execute arbitrary code when the client deserializes them. Upgrade to Redisson 3.22.0 or later. Do not use Kryo5Codec, which remains vulnerable; if using SerializationCodec, pass an allowed class list to restrict deserialization.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.7 | Critical | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.011, the 66th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:13 UTC First seen by agentprime
- 31 Oct 2026, 15:13 UTC Confirmed by OSV