CVE-2019-25337

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory published 2026-02-13. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

OwnCloud 8.1.8 contains a username enumeration vulnerability that allows remote attackers to discover user accounts by manipulating the share.php endpoint. Attackers can send crafted GET requests to /index.php/core/ajax/share.php with a wildcard search parameter to retrieve comprehensive user information.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

February 12, 2026

Last Modified

July 15, 2026

Advisory Details (4)

Auto-updated Sep 12, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

OwnCloud 8.1.8 - Username Disclosure | Advisories | VulnCheck

https://www.vulncheck.com/advisories/owncloud-username-disclosure
generic

Index of /packages/owncloud

https://ftp.icm.edu.pl/packages/owncloud/
generic

ownCloud - share files and folders, easy and secure

https://owncloud.org/
generic🟡 PoC Available

OwnCloud 8.1.8 - Username Disclosure - PHP webapps Exploit

https://www.exploit-db.com/exploits/47745

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 23× 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 216 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2019-25337?
CVE-2019-25337 is a critical vulnerability published on February 12, 2026. OwnCloud 8.1.8 contains a username enumeration vulnerability that allows remote attackers to discover user accounts by manipulating the share.php endpoint. Attackers can send crafted GET requests to /index.php/core/ajax/share.php with a wildcard search parameter to retrieve comprehensive user…
When was CVE-2019-25337 disclosed?
CVE-2019-25337 was first published in the National Vulnerability Database on February 12, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-25337 actively exploited?
CVE-2019-25337 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 63.9% of all scored CVEs.
What is the CVSS score of CVE-2019-25337?
CVE-2019-25337 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2019-25337?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-25337, 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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