CVE-2026-107697

MEDIUMPre-NVD 4.34.3
EchelonGraph scoreHIGH confidence

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

Score 4.3 from GitHub Security Advisory published 2026-10-08. A secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-95125 (ENISA EUVD) · GHSA-hhvh-2vr7-77mx (GitHub Security Advisories)Source: ENISA EUVD

4.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

FFmpeg before 8.1.3 contains a protection mechanism failure in the HLS demuxer that allows attackers to bypass protocol and allowed_extensions restrictions when opening child playlists. Attackers can supply a crafted master playlist whose child playlists use disallowed protocols or non-multimedia local files, making parse_playlist() open resources the HLS security policy should block.

CVSS v3
4.3
EG Score
4.3MEDIUMhigh confidence
EG Risk
34
EG Risk 34/100

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)
Severity43% × 45%
Impact severity (EG Severity): CVSS 4.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
24th
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 (4.3): severity, escalated by confirmed exploitation. This CVE's 4.3 is its impact severity (EG Severity), not escalated.

EG Severity
4.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-28). 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 low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days 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 low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

October 8, 2026

Last Modified

October 15, 2026

Advisory Details (6)

Auto-updated Oct 8, 2026
Patch available. Sources: github_commit.
Web page

FFmpeg before 8.1.3 HLS Demuxer Security Check Bypass via parse_playlist() | Advisories | VulnCheck

https://www.vulncheck.com/advisories/ffmpeg-before-8.1.3-hls-demuxer-security-check-bypass-via-parse-playlist
GitHub commit

commit 23602df9cd1b (FFmpeg/FFmpeg)

Fix landed in FFmpeg/FFmpeg commit 23602df9cd1b — awaiting tagged release

https://github.com/FFmpeg/FFmpeg/commit/23602df9cd1b485c45ba6f533d3b85569de3f323
GitHub commit

commit 191715f0232c (FFmpeg/FFmpeg)

Fix landed in FFmpeg/FFmpeg commit 191715f0232c — awaiting tagged release

https://github.com/FFmpeg/FFmpeg/commit/191715f0232c
GitHub commit

commit 01044d04536e (FFmpeg/FFmpeg)

Fix landed in FFmpeg/FFmpeg commit 01044d04536e — awaiting tagged release

https://github.com/FFmpeg/FFmpeg/commit/01044d04536e
Web page

FFmpeg/libavformat/hls.c at n8.1.2 · FFmpeg/FFmpeg · GitHub

https://github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c#L834
Web page

GitHub - FFmpeg/FFmpeg: Mirror of https://git.ffmpeg.org/ffmpeg.git · GitHub

https://github.com/FFmpeg/FFmpeg

Vendor Advisories for CVE-2026-107697(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
ffmpeg7:5.1.3-1 ... 7:9.0.2-3 (62 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
ffmpeg7:7.1.1-1 ... 7:9.0.2-3 (26 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
ffmpeg7:7.1.1-1 ... 7:9.0.1-1 (19 versions)
  • every version up to 7:9.0.2-1: fixed in 7:9.0.2-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 46× 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 it from the CNA feed. 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). Most recent first.

  1. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  2. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  3. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  4. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  5. 2026-10-29 14:56 UTCEG score recompute
  6. 2026-10-29 14:56 UTCGHSA enrichmentGHSA-hhvh-2vr7-77mx · GitHub CVSS 4.3
  7. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  8. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  9. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  10. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  11. 2026-10-25 14:54 UTCEG score recompute
  12. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  13. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  14. 2026-10-23 08:37 UTCEG score recompute
  15. 2026-10-23 08:37 UTCGHSA enrichmentGHSA-hhvh-2vr7-77mx · GitHub CVSS 4.3
  16. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  17. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  18. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  19. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  20. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  21. 2026-10-18 05:07 UTCEG score recompute
  22. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  23. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  24. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  25. 2026-10-15 00:08 UTCGHSA enrichmentGHSA-hhvh-2vr7-77mx · GitHub CVSS 4.3
Show 21 more
  1. 2026-10-14 17:36 UTCEG score recompute
  2. 2026-10-14 17:36 UTCGHSA enrichmentGHSA-hhvh-2vr7-77mx · GitHub CVSS 4.3
  3. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  4. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  5. 2026-10-12 16:38 UTCEG score recompute
  6. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  7. 2026-10-11 20:14 UTCEG score recompute
  8. 2026-10-11 17:03 UTCEG score recompute
  9. 2026-10-11 17:03 UTCGHSA enrichmentGHSA-hhvh-2vr7-77mx · GitHub CVSS 4.3
  10. 2026-10-11 15:00 UTCEG score recompute
  11. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  12. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  13. 2026-10-10 18:27 UTCEG score recompute
  14. 2026-10-10 18:27 UTCGHSA enrichmentGHSA-hhvh-2vr7-77mx · GitHub CVSS 4.3
  15. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  16. 2026-10-09 19:52 UTCGHSA enrichmentGHSA-hhvh-2vr7-77mx · GitHub CVSS 4.3
  17. 2026-10-08 21:16 UTCGHSA enrichmentGHSA-hhvh-2vr7-77mx · GitHub CVSS 4.3
  18. 2026-10-08 18:36 UTCEG score recompute
  19. 2026-10-08 18:36 UTCGHSA enrichmentGHSA-hhvh-2vr7-77mx · GitHub CVSS 4.3
  20. 2026-10-08 17:47 UTCEG score recomputeFirst assessed: 4.3 MEDIUM
  21. 2026-10-08 17:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-107697?
CVE-2026-107697 is a medium-severity vulnerability; its CVE record was published on October 8, 2026. FFmpeg before 8.1.3 contains a protection mechanism failure in the HLS demuxer that allows attackers to bypass protocol and allowed_extensions restrictions when opening child playlists. Attackers can supply a crafted master playlist whose child playlists use disallowed protocols or non-multimedia…
When was CVE-2026-107697 made public?
CVE-2026-107697 was made public on July 9, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on October 8, 2026. EchelonGraph's copy of the record carries a last-modified date of October 15, 2026; the record at its source may have been updated since.
Is CVE-2026-107697 actively exploited?
CVE-2026-107697 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (24th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-107697?
CVE-2026-107697 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-107697?
A fix for CVE-2026-107697 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-107697 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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