CVE-2026-14863

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-11. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.8Exploit: None knownExposed: 0

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

FileRun up to and including version 2026.2.0 contains an OS command injection vulnerability that allows authenticated attackers to achieve remote code execution by uploading a file with a malicious filename containing shell command substitution sequences. The thumbnail generation system passes filenames wrapped in shell double-quotes directly to exec() without escapeshellarg() sanitization, allowing filenames such as $(PAYLOAD).mp4 to survive the filename sanitizer and be evaluated as shell commands when ffmpeg, ImageMagick, vips, or stl-thumb processes the file during thumbnail generation.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation2% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
75%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 14, 2026

Advisory Details (3)

Auto-updated Aug 11, 2026
No patch confirmed yet.
generic

FileRun 2026.2.0 RCE via Thumbnail Generation Command Injection | Advisories | VulnCheck

https://www.vulncheck.com/advisories/filerun-rce-via-thumbnail-generation-command-injection
generic

FileRun — Self-hosted File Sync and Share

https://filerun.com/index.php/changelog?v=2026.2.1
generic

FileRun — Self-hosted File Sync and Share

https://filerun.com/

Vendor Advisories for CVE-2026-14863(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 30× in last 7d / 46× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 18:41 UTCGHSA enrichment
  3. 2026-08-20 06:41 UTCGHSA enrichment
  4. 2026-08-19 18:40 UTCEG score recompute
  5. 2026-08-19 18:40 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 05:51 UTCGHSA enrichment
  8. 2026-08-18 17:50 UTCEG score recompute
  9. 2026-08-18 17:50 UTCGHSA enrichment
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-18 05:30 UTCGHSA enrichment
  12. 2026-08-17 17:29 UTCEG score recompute
  13. 2026-08-17 17:29 UTCGHSA enrichment
  14. 2026-08-17 13:47 UTCEPSS rescore
  15. 2026-08-17 05:24 UTCGHSA enrichment
  16. 2026-08-16 17:13 UTCEG score recompute
  17. 2026-08-16 17:13 UTCGHSA enrichment
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 05:11 UTCEG score recompute
  20. 2026-08-16 05:11 UTCGHSA enrichment
  21. 2026-08-16 02:14 UTCEPSS rescore
  22. 2026-08-15 17:11 UTCGHSA enrichment
  23. 2026-08-15 05:10 UTCEG score recompute
  24. 2026-08-15 05:10 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 21 more
  1. 2026-08-14 17:09 UTCEG score recompute
  2. 2026-08-14 17:09 UTCGHSA enrichment
  3. 2026-08-14 14:28 UTCGHSA enrichment
  4. 2026-08-14 02:26 UTCEG score recompute
  5. 2026-08-14 02:26 UTCGHSA enrichment
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-13 14:25 UTCEG score recompute
  8. 2026-08-13 14:25 UTCGHSA enrichment
  9. 2026-08-13 13:56 UTCEG score recompute
  10. 2026-08-13 13:56 UTCGHSA enrichment
  11. 2026-08-13 02:24 UTCGHSA enrichment
  12. 2026-08-12 14:23 UTCEG score recompute
  13. 2026-08-12 14:23 UTCGHSA enrichment
  14. 2026-08-12 13:50 UTCEPSS rescore
  15. 2026-08-12 13:25 UTCEG score recompute
  16. 2026-08-12 13:25 UTCGHSA enrichment
  17. 2026-08-12 09:19 UTCEG score recompute
  18. 2026-08-12 09:19 UTCGHSA enrichment
  19. 2026-08-11 21:18 UTCEG score recompute
  20. 2026-08-11 20:45 UTCEG score recompute
  21. 2026-08-11 20:45 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-14863?
CVE-2026-14863 is a high vulnerability published on August 11, 2026. FileRun up to and including version 2026.2.0 contains an OS command injection vulnerability that allows authenticated attackers to achieve remote code execution by uploading a file with a malicious filename containing shell command substitution sequences. The thumbnail generation system passes…
When was CVE-2026-14863 disclosed?
CVE-2026-14863 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-14863 actively exploited?
CVE-2026-14863 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 25.1% of all scored CVEs.
What is the CVSS score of CVE-2026-14863?
CVE-2026-14863 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-14863?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-14863, 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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