CVE-2026-55477

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 74% 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
7.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.2Exploit: NoneExposed: 0

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

3X-UI is a web control panel for managing Xray-core servers. Prior to 3.3.1, an authenticated administrator can abuse the database import functionality to achieve arbitrary file write on the host by modifying Xray configuration values stored in the database. This can be leveraged to obtain code execution and persistent access as the user running Xray (including root when Xray is running as root). This vulnerability is fixed in 3.3.1.

CVSS v3
7.2
EG Score
7.2(medium)
EPSS
26.3%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 25, 2026

Advisory Details (1)

Auto-updated Jun 25, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Authenticated Arbitrary File Write via Database Import and Xray Log Path Manipulation · Advisory · MHSanaei/3x-ui · GitHub

https://github.com/MHSanaei/3x-ui/security/advisories/GHSA-jm48-m3rr-9hgg

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 27× in last 7d / 59× 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. 2026-07-12 03:23 UTCEG score recompute
  3. 2026-07-11 15:15 UTCEG score recompute
  4. 2026-07-11 08:27 UTCEPSS rescore
  5. 2026-07-11 08:27 UTCEPSS rescore
  6. 2026-07-11 03:07 UTCEG score recompute
  7. 2026-07-10 14:58 UTCEG score recompute
  8. 2026-07-10 02:49 UTCEG score recompute
  9. 2026-07-09 19:10 UTCEPSS rescore
  10. 2026-07-09 19:10 UTCEPSS rescore
  11. 2026-07-09 14:40 UTCEG score recompute
  12. 2026-07-09 02:31 UTCEG score recompute
  13. 2026-07-08 15:16 UTCEPSS rescore
  14. 2026-07-08 15:16 UTCEPSS rescore
  15. 2026-07-08 14:23 UTCEG score recompute
  16. 2026-07-08 02:15 UTCEG score recompute
  17. 2026-07-07 14:07 UTCEG score recompute
  18. 2026-07-07 13:46 UTCEPSS rescore
  19. 2026-07-07 13:46 UTCEPSS rescore
  20. 2026-07-07 01:58 UTCEG score recompute
  21. 2026-07-06 16:27 UTCEPSS rescore
  22. 2026-07-06 16:27 UTCEPSS rescore
  23. 2026-07-06 13:50 UTCEG score recompute
  24. 2026-07-06 02:23 UTCEPSS rescore
  25. 2026-07-06 02:23 UTCEPSS rescore
Show 34 more
  1. 2026-07-06 01:37 UTCEG score recompute
  2. 2026-07-05 13:29 UTCEG score recompute
  3. 2026-07-05 02:31 UTCEPSS rescore
  4. 2026-07-05 02:30 UTCEPSS rescore
  5. 2026-07-05 01:21 UTCEG score recompute
  6. 2026-07-04 13:12 UTCEG score recompute
  7. 2026-07-04 06:31 UTCEPSS rescore
  8. 2026-07-04 06:31 UTCEPSS rescore
  9. 2026-07-04 01:04 UTCEG score recompute
  10. 2026-07-03 12:54 UTCEG score recompute
  11. 2026-07-03 00:46 UTCEG score recompute
  12. 2026-07-02 12:38 UTCEG score recompute
  13. 2026-07-02 00:28 UTCEG score recompute
  14. 2026-07-01 15:07 UTCEPSS rescore
  15. 2026-07-01 12:18 UTCEG score recompute
  16. 2026-07-01 00:10 UTCEG score recompute
  17. 2026-06-30 23:22 UTCEPSS rescore
  18. 2026-06-30 12:00 UTCEG score recompute
  19. 2026-06-29 23:53 UTCEG score recompute
  20. 2026-06-29 14:06 UTCEPSS rescore
  21. 2026-06-29 14:06 UTCEPSS rescore
  22. 2026-06-29 11:45 UTCEG score recompute
  23. 2026-06-28 23:37 UTCEG score recompute
  24. 2026-06-28 14:07 UTCEPSS rescore
  25. 2026-06-28 11:29 UTCEG score recompute
  26. 2026-06-28 04:56 UTCEPSS rescore
  27. 2026-06-28 04:56 UTCEPSS rescore
  28. 2026-06-27 23:22 UTCEG score recompute
  29. 2026-06-27 11:14 UTCEG score recompute
  30. 2026-06-27 03:08 UTCEPSS rescore
  31. 2026-06-26 23:05 UTCEG score recompute
  32. 2026-06-26 10:57 UTCEG score recompute
  33. 2026-06-25 17:52 UTCEG score recompute
  34. 2026-06-25 17:48 UTCNVD updatefirst tracked

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Frequently asked(5)

What is CVE-2026-55477?
CVE-2026-55477 is a high vulnerability published on June 25, 2026. 3X-UI is a web control panel for managing Xray-core servers. Prior to 3.3.1, an authenticated administrator can abuse the database import functionality to achieve arbitrary file write on the host by modifying Xray configuration values stored in the database. This can be leveraged to obtain code…
When was CVE-2026-55477 disclosed?
CVE-2026-55477 was first published in the National Vulnerability Database on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55477 actively exploited?
CVE-2026-55477 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-55477?
CVE-2026-55477 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-55477?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55477, 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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