CVE-2026-90816

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-09-14. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability was found in FFmpeg 8.0.x. This affects the function parse_playlist of the file libavformat/hlsproto.c of the component Duration Parser. Performing a manipulation of the argument duration/target_duration results in denial of service. The attack is possible to be carried out remotely. Upgrading to version 8.1 and 9.0 is able to mitigate this issue. The patch is named 64fafd63f0b4. Upgrading the affected component is recommended.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 15, 2026

Advisory Details (3)

Auto-updated Sep 14, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

FFmpeg

https://ffmpeg.org/
generic

#21492 - Tight Loop / CPU Exhaustion in HLS Protocol Handler (hlsproto.c) - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/21492
generic

avformat: remove HLS protocol · 64fafd63f0 - FFmpeg/FFmpeg - FFmpeg Forgejo

https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/64fafd63f0b4

Vendor Advisories for CVE-2026-90816(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 17× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 02:55 UTCEG score recompute
  2. 2026-09-19 02:54 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 00:52 UTCEG score recompute
  5. 2026-09-18 00:52 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-16 22:49 UTCEG score recompute
  8. 2026-09-16 22:49 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-15 20:47 UTCEG score recompute
  12. 2026-09-15 20:47 UTCGHSA enrichment
  13. 2026-09-15 19:43 UTCEG score recompute
  14. 2026-09-15 19:43 UTCGHSA enrichment
  15. 2026-09-14 20:21 UTCEG score recompute
  16. 2026-09-14 20:15 UTCEG score recompute
  17. 2026-09-14 20:14 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-90816?
CVE-2026-90816 is a medium vulnerability published on September 14, 2026. A vulnerability was found in FFmpeg 8.0.x. This affects the function parseplaylist of the file libavformat/hlsproto.c of the component Duration Parser. Performing a manipulation of the argument duration/targetduration results in denial of service. The attack is possible to be carried out remotely.…
When was CVE-2026-90816 disclosed?
CVE-2026-90816 was first published in the National Vulnerability Database on September 14, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90816 actively exploited?
CVE-2026-90816 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 71.3% of all scored CVEs.
What is the CVSS score of CVE-2026-90816?
CVE-2026-90816 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-90816?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90816, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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