CVE-2026-119843

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 6.5 from GitHub Security Advisory (severity: MODERATE) published 2026-11-03. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-115733 (ENISA EUVD) · GHSA-j9j5-89xh-84jf (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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 v3
6.5
EG Score
6.5MEDIUMhigh confidence
EG Risk
29
EG Risk 29/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-03). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

November 3, 2026

Last Modified

November 3, 2026

Advisory Details (4)

Auto-updated Nov 3, 2026
Patch available. Sources: redhat.
Web page

Security Advisory 2026-0020 (CVE-2026-119843) | GStreamer

https://gstreamer.freedesktop.org/security/sa-2026-0020.html
Red Hat

2564182 – (CVE-2026-119843) CVE-2026-119843 gst-plugins-good: gst-plugins-good: assertion failures in FLV demuxer when parsing malformed enhanced audio/video tags

https://bugzilla.redhat.com/show_bug.cgi?id=2564182
Red HatMentions a patch (unverified)

CVE-2026-119843 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-119843

Vendor Advisories for CVE-2026-119843(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.22.0-5 ... 1.29.2-1 (77 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.26.10-1 ... 1.29.2-1 (33 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.26.10-1 ... 1.28.1-1 (19 versions)
  • every version up to 1.28.2-1: fixed in 1.28.2-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 15× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

  1. 2026-11-13 16:50 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  2. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  3. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  4. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  5. 2026-11-09 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  6. 2026-11-08 16:38 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  7. 2026-11-07 16:38 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  8. 2026-11-06 16:36 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  9. 2026-11-05 16:36 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-11-04 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  11. 2026-11-04 01:50 UTCEchelonGraph re-scored
  12. 2026-11-04 01:50 UTCGHSA enrichmentGHSA-j9j5-89xh-84jf · GitHub severity MODERATE · GitHub CVSS 6.5
  13. 2026-11-03 16:46 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  14. 2026-11-03 14:30 UTCEchelonGraph re-scored
  15. 2026-11-03 14:29 UTCGHSA enrichmentGHSA-j9j5-89xh-84jf · GitHub severity MODERATE · GitHub CVSS 6.5
  16. 2026-11-03 11:03 UTCENISA EUVD ID recordedEUVD-2026-115733 · Source: ENISA EUVD
  17. 2026-11-03 10:30 UTCEchelonGraph re-scored
  18. 2026-11-03 09:52 UTCEchelonGraph re-scoredFirst assessed: 6.5 MEDIUM
  19. 2026-11-03 09:51 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-119843?
CVE-2026-119843 is a medium-severity vulnerability; its CVE record was published on November 3, 2026. 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…
When was CVE-2026-119843 made public?
CVE-2026-119843 was made public on April 7, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on November 3, 2026. EchelonGraph's copy of the record carries a last-modified date of November 3, 2026; the record at its source may have been updated since.
Is CVE-2026-119843 actively exploited?
CVE-2026-119843 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-119843?
CVE-2026-119843 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-119843?
A fix for CVE-2026-119843 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-119843 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-119843

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