CVE-2026-55404

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.6% (48th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

yt-dlp and youtube-dl are command-line audio/video downloaders. Prior to 2026.7.4, the --write-link, --write-url-link, and --write-desktop-link options can write .url or .desktop shortcut files using attacker-controlled webpage_url or filename metadata without sufficient validation or escaping, allowing malicious file:// URI injection on Windows or newline-based desktop entry key injection on Linux that can execute commands if the generated shortcut is opened. This issue is fixed in version 2026.7.4.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA SSVC

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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
49th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 8, 2026

Last Modified

July 13, 2026

Advisory Details (3)

Auto-updated Jul 8, 2026
Patch available. Sources: github_commit, github_release, github.
githubMentions a patch (unverified)

yt-dlp: Downstream command injection via improper sanitization of --write-link output · Advisory · yt-dlp/yt-dlp · GitHub

https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-6v4j-43gg-vj32
github_release Patch Available

yt-dlp 2026.07.04

Patch available: yt-dlp/yt-dlp 2026.07.04

https://github.com/yt-dlp/yt-dlp/releases/tag/2026.07.04
github_commit

commit b6590aaa1e38 (yt-dlp/yt-dlp)

Fix landed in yt-dlp/yt-dlp commit b6590aaa1e38 — awaiting tagged release

https://github.com/yt-dlp/yt-dlp/commit/b6590aaa1e3808155d69c9a79a797ae484163789

Vendor Advisories for CVE-2026-55404(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
yt-dlp2023.03.04-1 ... 2026.08.19-1~bpo13+1 (116 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
yt-dlp2025.04.30-1 ... 2026.08.19-1~bpo13+1 (41 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
yt-dlp2025.04.30-1 ... 2026.07.04-1~bpo13+1 (38 versions)
  • every version up to 2026.07.04-1: fixed in 2026.07.04-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
yt-dlp2021.1.15 ... 2026.7.3.234421.dev0 (617 versions)
  • every version up to 2026.7.4: fixed in 2026.7.4
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 33× 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.

Showing the most recent 100 of 137 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
  3. 2026-10-08 17:12 UTCEPSS rescore
  4. 2026-10-07 23:48 UTCEPSS rescore
  5. 2026-10-06 15:18 UTCEPSS rescore
  6. 2026-10-05 17:43 UTCEPSS rescore
  7. 2026-10-04 23:22 UTCEPSS rescore
  8. 2026-10-03 14:26 UTCEPSS rescore
  9. 2026-10-02 17:56 UTCEPSS rescore
  10. 2026-10-01 19:50 UTCEPSS rescore
  11. 2026-10-01 16:10 UTCEG score recompute
  12. 2026-09-30 15:03 UTCEPSS rescore
  13. 2026-09-29 15:22 UTCEPSS rescore
  14. 2026-09-28 13:51 UTCEPSS rescore
  15. 2026-09-28 13:22 UTCEG score recompute
  16. 2026-09-27 13:48 UTCEPSS rescore
  17. 2026-09-26 15:59 UTCEPSS rescore
  18. 2026-09-24 14:04 UTCEPSS rescore
  19. 2026-09-24 11:47 UTCEG score recompute
  20. 2026-09-23 17:54 UTCEPSS rescore
  21. 2026-09-23 06:08 UTCEG score recompute
  22. 2026-09-20 20:16 UTCEPSS rescore
  23. 2026-09-18 19:28 UTCEPSS rescore
  24. 2026-09-18 05:43 UTCEG score recompute
  25. 2026-09-17 19:31 UTCEPSS rescore
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  1. 2026-09-16 14:08 UTCEPSS rescore
  2. 2026-09-16 05:15 UTCEPSS rescore
  3. 2026-09-15 03:11 UTCEPSS rescore
  4. 2026-09-13 23:49 UTCEG score recompute
  5. 2026-09-13 16:47 UTCEPSS rescore
  6. 2026-09-12 15:43 UTCEG score recompute
  7. 2026-09-12 03:31 UTCEG score recompute
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-10 09:35 UTCEPSS rescore
  10. 2026-09-08 22:01 UTCEPSS rescore
  11. 2026-09-07 16:01 UTCEPSS rescore
  12. 2026-09-06 14:02 UTCEG score recompute
  13. 2026-09-06 13:47 UTCEPSS rescore
  14. 2026-09-05 22:47 UTCEG score recompute
  15. 2026-09-04 05:06 UTCEPSS rescore
  16. 2026-09-02 14:12 UTCEPSS rescore
  17. 2026-09-01 13:54 UTCEPSS rescore
  18. 2026-09-01 04:40 UTCEPSS rescore
  19. 2026-08-30 19:41 UTCEG score recompute
  20. 2026-08-30 19:17 UTCEPSS rescore
  21. 2026-08-30 07:29 UTCEG score recompute
  22. 2026-08-30 01:22 UTCEPSS rescore
  23. 2026-08-28 21:41 UTCEPSS rescore
  24. 2026-08-27 21:50 UTCEG score recompute
  25. 2026-08-27 14:25 UTCEPSS rescore
  26. 2026-08-27 01:27 UTCEG score recompute
  27. 2026-08-26 14:46 UTCEPSS rescore
  28. 2026-08-26 08:22 UTCEG score recompute
  29. 2026-08-25 13:49 UTCEPSS rescore
  30. 2026-08-24 20:32 UTCEG score recompute
  31. 2026-08-23 05:56 UTCEG score recompute
  32. 2026-08-23 00:19 UTCEPSS rescore
  33. 2026-08-22 04:57 UTCEG score recompute
  34. 2026-08-21 23:49 UTCEPSS rescore
  35. 2026-08-21 03:59 UTCEG score recompute
  36. 2026-08-20 22:55 UTCEPSS rescore
  37. 2026-08-20 01:58 UTCEG score recompute
  38. 2026-08-19 17:04 UTCEPSS rescore
  39. 2026-08-18 20:44 UTCEG score recompute
  40. 2026-08-18 13:48 UTCEPSS rescore
  41. 2026-08-17 23:49 UTCEG score recompute
  42. 2026-08-17 13:47 UTCEPSS rescore
  43. 2026-08-16 23:24 UTCEG score recompute
  44. 2026-08-16 14:56 UTCEPSS rescore
  45. 2026-08-16 11:12 UTCEG score recompute
  46. 2026-08-16 02:14 UTCEPSS rescore
  47. 2026-08-15 10:47 UTCEG score recompute
  48. 2026-08-15 01:30 UTCEPSS rescore
  49. 2026-08-13 22:10 UTCEG score recompute
  50. 2026-08-13 22:00 UTCEPSS rescore
  51. 2026-08-12 21:46 UTCEG score recompute
  52. 2026-08-12 13:51 UTCEPSS rescore
  53. 2026-08-11 21:21 UTCEG score recompute
  54. 2026-08-11 09:09 UTCEG score recompute
  55. 2026-08-11 00:00 UTCEPSS rescore
  56. 2026-08-09 20:31 UTCEG score recompute
  57. 2026-08-09 13:46 UTCEPSS rescore
  58. 2026-08-08 20:07 UTCEG score recompute
  59. 2026-08-08 16:37 UTCEPSS rescore
  60. 2026-08-07 19:42 UTCEG score recompute
  61. 2026-08-06 19:18 UTCEG score recompute
  62. 2026-08-06 13:47 UTCEPSS rescore
  63. 2026-08-06 07:05 UTCEG score recompute
  64. 2026-08-05 19:17 UTCEPSS rescore
  65. 2026-08-04 17:10 UTCEG score recompute
  66. 2026-08-04 15:10 UTCEPSS rescore
  67. 2026-08-04 10:39 UTCEPSS rescore
  68. 2026-08-03 16:45 UTCEG score recompute
  69. 2026-08-03 10:36 UTCEPSS rescore
  70. 2026-08-02 04:08 UTCEG score recompute
  71. 2026-08-02 02:27 UTCEPSS rescore
  72. 2026-08-01 15:55 UTCEG score recompute
  73. 2026-08-01 04:16 UTCEPSS rescore
  74. 2026-07-31 03:00 UTCEG score recompute
  75. 2026-07-30 16:28 UTCEPSS rescore

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-55404?
CVE-2026-55404 is a high vulnerability published on July 8, 2026. yt-dlp and youtube-dl are command-line audio/video downloaders. Prior to 2026.7.4, the --write-link, --write-url-link, and --write-desktop-link options can write .url or .desktop shortcut files using attacker-controlled webpage_url or filename metadata without sufficient validation or escaping,…
When was CVE-2026-55404 disclosed?
CVE-2026-55404 was first published on July 8, 2026, with the most recent update on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55404 actively exploited?
CVE-2026-55404 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (49th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55404?
CVE-2026-55404 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-55404?
A fix for CVE-2026-55404 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-55404 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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