https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-04T22:04:21.182708+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/bdu:2026-08455 bdu:2026-08455 2026-10-04T22:04:21.186514+00:00 bdu:2026-08455 https://cve.radiocsirt.org/vuln/euvd-2026-344263 EUVD-2026-344263 2026-10-04T22:04:21.186544+00:00 EUVD-2026-344263 https://cve.radiocsirt.org/vuln/fkie_cve-2026-48748 fkie_cve-2026-48748 2026-10-04T22:04:21.186559+00:00

Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error. Version 4.2.15.Final patches the issue.

 https://cve.radiocsirt.org/vuln/ghsa-4grm-h2qv-h6w6 GHSA-4grm-h2qv-h6w6 — Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion 2026-10-04T22:04:21.186588+00:00

Affected: Maven: io.netty:netty-codec-http3

### Summary A memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error.

### Details The vulnerability exists in `io.netty.handler.codec.http3.QpackDecoder#shouldWaitForDynamicTableUpdates`:

If a client sends a header referencing a table entry that the server hasn't received yet, the server must pause that stream and wait for the missing entry to arrive. To prevent attackers from exhausting resources by intentionally sending missing references, Netty limits the number of streams that can be blocked at the same time.

However, the check is implemented as:

```java if (blockedStreamsCount == maxBlockedStreams - 1) { ```

If the server enables QPACK dynamic tables (by setting `HTTP3_SETTINGS_QPACK_MAX_TABLE_CAPACITY` > 0) but does not explicitly configure `HTTP3_SETTINGS_QPACK_BLOCKED_STREAMS`, it defaults to 0.

When `maxBlockedStreams` is 0, the condition evaluates to `blockedStreamsCount == -1`. Since `blockedStreamsCount` starts at `0` and only increments, it never equals `-1`. This bypasses the limit, allowing an attacker to open an infinite number of streams that block indefinitely. Additionally, the `QpackDecoder` never removes unblocked streams from the `blockedStreams` map or decrements the counter, meaning the `ReadResumptionListener` for each blocked stream is kept in memory for the entire lifetime of the connection. This exhausts server memory and crashes the JVM.

### Impact D…

 https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-48748 UBUNTU-CVE-2026-48748 2026-10-04T22:04:21.186631+00:00

Affected: Ubuntu:Pro:14.04:LTS: netty, Ubuntu:Pro:16.04:LTS: netty, Ubuntu:Pro:18.04:LTS: netty, Ubuntu:Pro:20.04:LTS: netty, Ubuntu:Pro:22.04:LTS: netty, Ubuntu:Pro:24.04:LTS: netty, Ubuntu:25.10: netty, Ubuntu:Pro:26.04:LTS: netty

Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error. Version 4.2.15.Final patches the issue.

 https://cve.radiocsirt.org/vuln/wid-sec-w-2026-1814 WID-SEC-W-2026-1814 — Netty: Mehrere Schwachstellen 2026-10-04T22:04:21.186661+00:00

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Netty ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand herbeizuführen.