---
id: "CVE-2026-112060"
kind: "vulnerability"
aliases: ["CVE-2026-112060"]
title: "RTMPDump librtmp: malicious server can corrupt heap memory and leak bytes"
severity: "medium"
cvss: 6.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["librtmp", "media-tools", "package", "rtmpdump", "self-hosted"]
not_affected_if: ["local-files-only", "no-rtmp-input"]
published_at: "2026-10-18T13:16:38+00:00"
first_seen_at: "2026-10-23T21:57:15+00:00"
updated_at: "2026-10-25T03:59:34+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112060", "first_seen_at": "2026-10-23T21:57:15+00:00"}]
---

# RTMPDump librtmp: malicious server can corrupt heap memory and leak bytes

librtmp, the RTMP client library shipped with RTMPDump through 2.6, ignores AMF3 decode failures, so oversized string lengths from a malicious RTMP server or man-in-the-middle cause out-of-bounds reads and heap writes. With the token option enabled, DecodeTEA corrupts heap memory and leaks heap bytes to the attacker.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether the `rtmpdump` or `librtmp` package is installed, for example with `rtmpdump --help` or `ldconfig -p | grep rtmp`.
- Check whether the installed version is `2.6` or earlier; the sources say 'through 2.6' and give no fixed version.
- Check whether any application calls librtmp with the token option.

## Timeline

- 2026-10-23T21:57:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112060

## From the sources

librtmp in RTMPDump through 2.6 contains an out-of-bounds read and heap out-of-bounds write vulnerability because AMF3_Decode ignores AMF3 property decode failures. Malicious RTMP servers or man-in-the-middle attackers can send oversized AMF3 string lengths, and with the token option DecodeTEA corrupts heap memory and leaks heap bytes.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_