GHSA-3244-j874-rhc2

Suggest an improvement
Source
https://github.com/advisories/GHSA-3244-j874-rhc2
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3244-j874-rhc2/GHSA-3244-j874-rhc2.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-3244-j874-rhc2
Aliases
  • CVE-2026-44250
Related
Published
2026-06-08T19:01:52Z
Modified
2026-06-12T19:30:08.485135902Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Netty: Memory Exhaustion in RedisArrayAggregator due to Deeply Nested Arrays
Details

Summary

An attacker can cause DoS by sending a crafted Redis payload with deeply nested arrays. This forces the server to allocate a massive number of state objects and collections, leading to memory exhaustion and an OutOfMemoryError.

Details

io.netty.handler.codec.redis.RedisArrayAggregator aggregates RedisMessage parts into ArrayRedisMessage. It uses a Deque<AggregateState> to keep track of nested arrays. However, it does not limit the maximum depth of nested arrays. When an attacker sends a continuous stream of nested array headers (e.g., *1\r\n*1\r\n*1\r\n...), RedisArrayAggregator pushes a new AggregateState onto the stack and allocates a new ArrayList for each header. Because there is no depth limit, an attacker can send millions of such headers. This consumes a massive amount of heap memory for the AggregateState instances and their backing ArrayLists, eventually resulting in an OutOfMemoryError.

Impact

Denial of Service due to memory exhaustion. Any application using Netty's RedisArrayAggregator to handle untrusted Redis traffic is vulnerable.

Database specific 
{
    "github_reviewed_at": "2026-06-08T19:01:52Z",
    "cwe_ids": [
        "CWE-400"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "nvd_published_at": "2026-06-11T22:16:56Z"
}
References

Affected packages

Maven / io.netty:netty-codec-redis

Package

Name
io.netty:netty-codec-redis
View open source insights on deps.dev
Purl
pkg:maven/io.netty/netty-codec-redis

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.2.0.Final
Fixed
4.2.15.Final

Affected versions

4.*
4.2.0.Final
4.2.1.Final
4.2.2.Final
4.2.3.Final
4.2.4.Final
4.2.5.Final
4.2.6.Final
4.2.7.Final
4.2.8.Final
4.2.9.Final
4.2.10.Final
4.2.11.Final
4.2.12.Final
4.2.13.Final
4.2.14.Final

Database specific

last_known_affected_version_range 
"<= 4.2.14.Final"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3244-j874-rhc2/GHSA-3244-j874-rhc2.json"

Maven / io.netty:netty-codec-redis

Package

Name
io.netty:netty-codec-redis
View open source insights on deps.dev
Purl
pkg:maven/io.netty/netty-codec-redis

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.1.135.Final

Affected versions

4.*
4.1.0.Final
4.1.1.Final
4.1.2.Final
4.1.3.Final
4.1.4.Final
4.1.5.Final
4.1.6.Final
4.1.7.Final
4.1.8.Final
4.1.9.Final
4.1.10.Final
4.1.11.Final
4.1.12.Final
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4.1.128.Final
4.1.129.Final
4.1.130.Final
4.1.131.Final
4.1.132.Final
4.1.133.Final
4.1.134.Final

Database specific

last_known_affected_version_range 
"<= 4.1.134.Final"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3244-j874-rhc2/GHSA-3244-j874-rhc2.json"