CVE-2026-48793

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 72% of all CVEs by exploit prediction. 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, secondary
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

Jellyfin is an open source self hosted media server. Prior to 10.11.10, a potential FFmpeg argument injection vulnerability exists in the subtitle conversion code path. SubtitleEncoder.ConvertTextSubtitleToSrtInternal (SubtitleEncoder.cs, line 382) interpolates the subtitle file path into FFmpeg command-line arguments without calling EncodingUtils.NormalizePath(). On Linux, filenames can contain double-quote characters, which break the argument quoting and allow injection of arbitrary FFmpeg arguments. The vulnerability is reachable without authentication via SubtitleController.GetSubtitle, which has no [Authorize] attribute. An attacker who can place a file in a Jellyfin media library directory (shared NAS, Samba share, guest upload) can achieve arbitrary file write on the server and information disclosure. This vulnerability is fixed in 10.11.10.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
27.9%
KEV
Not listed

Published

June 24, 2026

Last Modified

June 26, 2026

Advisory Details (1)

Auto-updated Jun 24, 2026
Patch available. Sources: github.
github Patch Available

Potential FFmpeg argument injection via unescaped subtitle file path · Advisory · jellyfin/jellyfin · GitHub

https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wwwm-px48-fpvq

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 51× 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. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 21:23 UTCEG score recompute
  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-11 08:13 UTCEG score recompute
  5. 2026-07-10 19:03 UTCEG score recompute
  6. 2026-07-10 05:49 UTCEG score recompute
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-09 16:40 UTCEG score recompute
  9. 2026-07-09 03:24 UTCEG score recompute
  10. 2026-07-08 15:16 UTCEPSS rescore
  11. 2026-07-08 13:54 UTCEG score recompute
  12. 2026-07-08 00:43 UTCEG score recompute
  13. 2026-07-07 13:46 UTCEPSS rescore
  14. 2026-07-07 11:33 UTCEG score recompute
  15. 2026-07-06 22:25 UTCEG score recompute
  16. 2026-07-06 16:27 UTCEPSS rescore
  17. 2026-07-06 09:12 UTCEG score recompute
  18. 2026-07-06 02:23 UTCEPSS rescore
  19. 2026-07-05 19:38 UTCEG score recompute
  20. 2026-07-05 06:29 UTCEG score recompute
  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-04 17:20 UTCEG score recompute
  23. 2026-07-04 06:31 UTCEPSS rescore
  24. 2026-07-04 04:09 UTCEG score recompute
  25. 2026-07-03 14:35 UTCEG score recompute
Show 26 more
  1. 2026-07-03 01:26 UTCEG score recompute
  2. 2026-07-02 12:16 UTCEG score recompute
  3. 2026-07-01 23:07 UTCEG score recompute
  4. 2026-07-01 15:07 UTCEPSS rescore
  5. 2026-07-01 09:59 UTCEG score recompute
  6. 2026-06-30 23:22 UTCEPSS rescore
  7. 2026-06-30 20:50 UTCEG score recompute
  8. 2026-06-30 07:41 UTCEG score recompute
  9. 2026-06-29 18:32 UTCEG score recompute
  10. 2026-06-29 14:06 UTCEPSS rescore
  11. 2026-06-29 14:06 UTCEPSS rescore
  12. 2026-06-29 05:24 UTCEG score recompute
  13. 2026-06-28 16:11 UTCEG score recompute
  14. 2026-06-28 14:07 UTCEPSS rescore
  15. 2026-06-28 04:56 UTCEPSS rescore
  16. 2026-06-28 04:56 UTCEPSS rescore
  17. 2026-06-28 03:02 UTCEG score recompute
  18. 2026-06-27 13:54 UTCEG score recompute
  19. 2026-06-27 03:08 UTCEPSS rescore
  20. 2026-06-27 00:45 UTCEG score recompute
  21. 2026-06-26 11:36 UTCEG score recompute
  22. 2026-06-25 22:27 UTCEG score recompute
  23. 2026-06-25 13:49 UTCEPSS rescore
  24. 2026-06-25 09:15 UTCEG score recompute
  25. 2026-06-24 20:06 UTCEG score recompute
  26. 2026-06-24 20:03 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-48793?
CVE-2026-48793 is a high vulnerability published on June 24, 2026. Jellyfin is an open source self hosted media server. Prior to 10.11.10, a potential FFmpeg argument injection vulnerability exists in the subtitle conversion code path. SubtitleEncoder.ConvertTextSubtitleToSrtInternal (SubtitleEncoder.cs, line 382) interpolates the subtitle file path into FFmpeg…
When was CVE-2026-48793 disclosed?
CVE-2026-48793 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48793 actively exploited?
CVE-2026-48793 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-48793?
CVE-2026-48793 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-48793?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48793, 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.

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