CVE-2026-18649: Software Security Vulnerability Vulnerability
HIGHCVE-2026-18649 is a HIGH (CVSS 7.5) security vulnerability vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-18649 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
How to Fix CVE-2026-18649
To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:treeHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-18649, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:treeAnalyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.
Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
References
Frequently Asked Questions
What is CVE-2026-18649?
Which Software versions are affected?
What version fixes CVE-2026-18649?
What is the CVSS score of CVE-2026-18649?
What CWE is associated with CVE-2026-18649?
How can I check Maven dependencies for CVE-2026-18649?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-wr93-5xph-995g",
"modified" : "2026-09-23T15:30:36Z",
"published" : "2026-08-06T09:30:31Z",
"aliases" : [ "CVE-2026-18649" ],
"details" : "A flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, unauthenticated attacker can send a continuous stream of RTP fragments without ever transmitting an end-of-fragment marker, causing the reassembly buffer to grow without bound until process memory is exhausted. This results in a denial of service through process termination.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-18649"
}, {
"type" : "WEB",
"url" : "https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/113"
}, {
"type" : "WEB",
"url" : "https://github.com/0xSemizzz/CVE-2026-18649"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2510614"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/security/cve/CVE-2026-18649"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:70803"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:70584"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:70264"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:69232"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:65999"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:65959"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:61943"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:61588"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:56966"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:53452"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:53451"
}, {
"type" : "WEB",
"url" : "https://0xsemizzz.vercel.app/projects/cve-2026-18649-gstreamer-rtp-dos"
}, {
"type" : "WEB",
"url" : "https://0xsemizzz.vercel.app/blog/cve-2026-18649-gstreamer-rtp-dos"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-770" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-08-06T08:16:29Z"
}
}