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CVE-2026-119843

Gst-plugins-good: assertion failures in FLV demuxer when parsing malformed enhanced audio/video tags

CVSS score

6.5

EPSS probability

—

Risk score

0.7

Published

2 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Gst-plugins-good FLV Demuxer Vulnerability in CVE-2026-119843

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A flaw exists in GStreamer's gst-plugins-good package within the FLV media demuxer, caused by improper validation of buffer sizes and data availability when processing enhanced audio and video tags in malformed or truncated FLV streams.

Why does it matter?

A remote attacker can provide a specially crafted FLV media file to trigger an application crash and cause a denial of service in GStreamer-based applications.

What should be done?

  • Follow vendor advisories from the GStreamer project
  • Update software packages
  • Review related vendor security guidance
Chain of evidence and sources2 verified claims

GStreamer gst-plugins-good FLV demuxer bileşeni, bozuk akışlardaki gelişmiş ses ve video etiketlerini işlerken arabellek boyutlarını doğrulamaz.

S0 · daybreach-canonicalS1 · cvelist

Uzak bir saldırgan, özel olarak hazırlanmış bir FLV dosyası sunarak hizmet kesintisine neden olabilir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

A flaw was found in GStreamer's gst-plugins-good package. The FLV media demuxer does not properly validate buffer sizes and data availability when processing enhanced audio and video tags in malformed or truncated FLV streams. A remote attacker could exploit this vulnerability by providing a specially crafted FLV media file that, when opened or streamed by a GStreamer-based application, triggers an assertion failure or a process crash, leading to denial of service.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE: CWE-617

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-119843 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Red HatRed Hat Enterprise Linux 10 View
2Red HatRed Hat Enterprise Linux 7 View
3Red HatRed Hat Enterprise Linux 8 View
4Red HatRed Hat Enterprise Linux 9 View
5GStreamer projectgst-plugins-good View
Total affected vendors: 2|Products: 5

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.5CVSS V31MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HNVD
6.5CVSS V3_1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HCVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-119843 is associated with the following CWEs:

CWE-617: Common Weakness Enumeration Entry CWE-617

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-119843 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekiyor

Official Sources and Advisories

https://access.redhat.com/security/cve/CVE-2026-119843vendor-advisoryRHBZ#2564182vendor-advisoryhttps://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11244.patchvendor-advisoryhttps://gstreamer.freedesktop.org/security/sa-2026-0020.htmlvendor-advisory

CVSS Vector Radar Chart

6.5 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.RequiredConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User Interaction—
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

RH
Red Hat logo
Red Hat
GP
GStreamer project logo
GStreamer project

Weakness Type (CWE & CAPEC)

CWE-617

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CVE-2026-119843 · Gst-plugins-good: assertion failures in…