CVE-2026-93572— Io.netty/netty-codec-redis: netty: redisarrayaggregator nested resp headers multiply patched preallocation limits
Quick assessment
Affected
Red Hat Red Hat build of Apache Camel for Spring Boot 4
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Summary recently added and limits to fix public Redis resource-exhaustion advisories. The limits are independent, but the allocator remains eager: every positive nested RESP array header creates before any child element exists. With the default constructor, an
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I. Basic Information for CVE-2026-93572
Vulnerability Information
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Vulnerability Title
Io.netty/netty-codec-redis: netty: redisarrayaggregator nested resp headers multiply patched preallocation limits
Source: CVE Program / CVE List V5
Vulnerability Description
## Summary
`RedisArrayAggregator` recently added `maxElements` and `maxNestedArrayDepth` limits to fix public Redis resource-exhaustion advisories. The limits are independent, but the allocator remains eager: every positive nested RESP array header creates `new ArrayList<RedisMessage>(length)` before any child element exists.
With the default constructor, an attacker can send nested array headers with length `1,000,000` until the default nesting limit of `1024` is reached. This can reserve up to `1,024,000,000` child slots from roughly 12 KB of RESP input. This is backing capacity, not logical list size: `ArrayList(int)` constructs an empty list with the specified initial capacity.
## Technical Details
Current `decodeRedisArrayHeader(...)` checks the two limits independently:
```java
if (header.length() > maxElements) {
throw new CodecException("this codec doesn't support longer length than " + maxElements);
}
if (depths.size() >= maxNestedArrayDepth) {
releaseAndClearDepths();
throw new CodecException("max nested array depth exceeded: " + maxNestedArrayDepth);
}
depths.push(new AggregateState((int) header.length()));
```
`AggregateState` i
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 | - |
cpe:/a:redhat:camel_spring_boot:4
|
|
| Red Hat | Red Hat Fuse 7 | - |
cpe:/a:redhat:jboss_fuse:7
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | - |
cpe:/a:redhat:jboss_enterprise_application_platform:7
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | - |
cpe:/a:redhat:jboss_enterprise_application_platform:7
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | - |
cpe:/a:redhat:jboss_enterprise_application_platform:7
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | - |
cpe:/a:redhat:jboss_enterprise_application_platform:7
|
|
| Red Hat | Red Hat Single Sign-On 7 | - |
cpe:/a:redhat:red_hat_single_sign_on:7
|
|
II. Public POCs for CVE-2026-93572
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-93572 (1)
Other References for CVE-2026-93572 (1)
Same Patch Batch · Red Hat · 2026-09-18 · 37 CVEs total
| CVE-2026-93569 | 8.2 HIGH | Io.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :au |
| CVE-2026-93565 | 7.5 HIGH | Io.netty/netty-codec-http: netty rtspdecoder method-token smuggling via trailing control b |
| CVE-2026-89059 | 7.5 HIGH | Resteasy-core: resteasy: iioimageprovider unbounded image decode (decompression-bomb dos) |
| CVE-2026-93494 | 7.5 HIGH | Io.netty/netty-codec-stomp: netty: bytebuf leak in stompsubframedecoder when a frame body |
| CVE-2026-87743 | 7.5 HIGH | Quarkus-vertx-http: authorization bypass via path normalization discrepancy in quarkus htt |
| CVE-2026-93575 | 7.5 HIGH | Io.netty/netty-codec-mqtt: netty: resource exhaustion in mqttdecoder |
| CVE-2026-93563 | 7.5 HIGH | Io.netty/netty-codec-smtp: netty: unbounded multi-line response accumulation in smtprespon |
| CVE-2026-93488 | 7.5 HIGH | Io.netty/netty-codec-http: netty: denial of service via unbounded concurrent spdy streams |
| CVE-2026-93491 | 7.5 HIGH | Io.netty/netty-codec-http: netty: denial of service via unbounded httpservercodec http/1.1 |
| CVE-2026-93560 | 7.5 HIGH | Io.netty/netty-codec-stomp: netty: stomp codec content-length long-to-int truncation cause |
| CVE-2026-93558 | 7.5 HIGH | Io.netty/netty-codec-http: netty: unbounded per-connection queue growth in websocketserver |
| CVE-2026-93564 | 7.5 HIGH | Io.netty/netty-codec-haproxy: netty: haproxy proxy-v2 nested-tlv grandchild bytebuf refere |
| CVE-2026-93567 | 7.5 HIGH | Io.netty/netty-codec-http2: http/1 authority-form connect is translated to malformed http/ |
| CVE-2026-93576 | 7.5 HIGH | Io.netty/netty-codec-smtp: netty netty-codec-smtp — smtp command-name field is not crlf-va |
| CVE-2026-91149 | 7.5 HIGH | Cockpit: cockpit: denial of service via unbounded connection thread spawning |
| CVE-2026-93568 | 7.5 HIGH | Io.netty/netty-codec-http2: io.netty/netty-codec-http3: netty: http/2 and http/3 extended |
| CVE-2026-89058 | 7.4 HIGH | Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildc |
| CVE-2026-81627 | 6.7 MEDIUM | Qemu-kvm: vapic writable rom alias can escape the option-rom window and expose locked smra |
| CVE-2026-93579 | 6.5 MEDIUM | Io.netty/netty-codec-http2: netty: http/2 header field values are not validated by default |
| CVE-2026-93561 | 6.5 MEDIUM | Io.netty/netty-codec-memcache: netty: memcache binary codec signed/unsigned type mismatch |
Showing top 20 of 37 CVEs. View all on vendor page → →
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