CVE-2015-8399

HIGHNVD 4.37.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 7.0 because EPSS predicts 61% probability of exploitation within the next 30 days (top 0.9% of all CVEs). NVD baseline CVSS 4.3 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Elevated
7.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • 183 internet-exposed hosts are running an affected version right now
  • High exploitation likelihood — EPSS 61%
CISA-KEV: Not listedEPSS PROB: 61%CVSS: 4.3Exploit: Elevated riskExposed: 183

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

Atlassian Confluence before 5.8.17 allows remote authenticated users to read configuration files via the decoratorName parameter to (1) spaces/viewdefaultdecorator.action or (2) admin/viewdefaultdecorator.action.

Live · internet exposure

183 internet-exposed hosts are running an affected version of CVE-2015-8399 right now.

across 34 countries (United States, Germany, China, Finland, India)top: confluence
See the live KEV-Exposure radar →Found passively from public internet-scan data — aggregate, host-redacted.

EchelonGraph is the only CVE feed that fuses live vulnerability intelligence with its own live internet-exposure radar — so you see not just that a CVE is exploited, but how much of the internet is exposed to it right now.

CVSS v3
4.3
EG Score
7.0(high)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity70% × 45%
Exploitation61% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
61%
EPSS %ILE
99%
KEV
Not listed

Published

April 11, 2016

Last Modified

June 17, 2026

References (4)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 21× 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 22:50 UTCEPSS rescore
  2. 2026-08-19 16:59 UTCEPSS rescore
  3. 2026-08-18 13:43 UTCEPSS rescore
  4. 2026-08-16 02:09 UTCEPSS rescore
  5. 2026-08-15 01:25 UTCEPSS rescore
  6. 2026-08-12 13:46 UTCEPSS rescore
  7. 2026-08-11 13:36 UTCEPSS rescore
  8. 2026-08-09 13:42 UTCEPSS rescore
  9. 2026-08-08 16:32 UTCEPSS rescore
  10. 2026-08-07 16:22 UTCEPSS rescore
  11. 2026-08-05 19:12 UTCEPSS rescore
  12. 2026-08-04 15:04 UTCEPSS rescore
  13. 2026-08-01 04:11 UTCEPSS rescore
  14. 2026-07-30 01:26 UTCEPSS rescore
  15. 2026-07-30 01:26 UTCEPSS rescore
  16. 2026-07-28 15:31 UTCEPSS rescore
  17. 2026-07-26 14:50 UTCEPSS rescore
  18. 2026-07-25 14:13 UTCEPSS rescore
  19. 2026-07-24 14:13 UTCEPSS rescore
  20. 2026-07-23 01:20 UTCEG score recompute
  21. 2026-07-23 00:21 UTCEG score recompute▲ 2.70
  22. 2026-07-22 21:59 UTCEG score recompute▼ 4.70
  23. 2026-07-22 14:04 UTCEPSS rescore
  24. 2026-07-21 15:21 UTCEPSS rescore
  25. 2026-07-21 15:21 UTCEPSS rescore
Show 63 more
  1. 2026-07-20 17:03 UTCEPSS rescore
  2. 2026-07-19 14:27 UTCEPSS rescore
  3. 2026-07-19 14:27 UTCEPSS rescore
  4. 2026-07-19 02:26 UTCEPSS rescore
  5. 2026-07-19 02:26 UTCEPSS rescore
  6. 2026-07-16 16:59 UTCEPSS rescore
  7. 2026-07-15 16:54 UTCEPSS rescore
  8. 2026-07-15 16:54 UTCEPSS rescore
  9. 2026-07-15 01:56 UTCEPSS rescore
  10. 2026-07-13 22:26 UTCEPSS rescore
  11. 2026-07-13 22:26 UTCEPSS rescore
  12. 2026-07-12 05:42 UTCEPSS rescore
  13. 2026-07-11 08:23 UTCEPSS rescore
  14. 2026-07-09 19:05 UTCEPSS rescore
  15. 2026-07-09 19:05 UTCEPSS rescore
  16. 2026-07-07 13:42 UTCEPSS rescore
  17. 2026-07-07 13:42 UTCEPSS rescore
  18. 2026-07-05 02:26 UTCEPSS rescore
  19. 2026-07-01 15:02 UTCEPSS rescore
  20. 2026-06-28 04:53 UTCEPSS rescore
  21. 2026-06-27 03:05 UTCEPSS rescore
  22. 2026-06-25 13:47 UTCEPSS rescore
  23. 2026-06-25 13:47 UTCEPSS rescore
  24. 2026-06-24 14:02 UTCEPSS rescore
  25. 2026-06-24 14:02 UTCEPSS rescore
  26. 2026-06-23 21:30 UTCEPSS rescore
  27. 2026-06-22 14:23 UTCEPSS rescore
  28. 2026-06-22 14:23 UTCEPSS rescore
  29. 2026-06-21 14:54 UTCEPSS rescore
  30. 2026-06-21 14:54 UTCEPSS rescore
  31. 2026-06-21 01:57 UTCEPSS rescore
  32. 2026-06-21 01:57 UTCEPSS rescore
  33. 2026-06-17 17:50 UTCEPSS rescore
  34. 2026-06-17 17:49 UTCEPSS rescore
  35. 2026-06-16 17:50 UTCEPSS rescore
  36. 2026-06-16 17:50 UTCEPSS rescore
  37. 2026-06-15 17:45 UTCEPSS rescore
  38. 2026-06-13 22:57 UTCEPSS rescore
  39. 2026-06-12 23:09 UTCEPSS rescore
  40. 2026-06-12 23:09 UTCEPSS rescore
  41. 2026-06-11 13:57 UTCEPSS rescore
  42. 2026-06-11 13:57 UTCEPSS rescore
  43. 2026-06-10 13:18 UTCEPSS rescore
  44. 2026-06-07 15:22 UTCEPSS rescore
  45. 2026-06-05 22:44 UTCEPSS rescore
  46. 2026-06-02 20:10 UTCEPSS rescore
  47. 2026-05-29 13:41 UTCEPSS rescore
  48. 2026-05-28 13:42 UTCEPSS rescore
  49. 2026-05-28 13:42 UTCEPSS rescore
  50. 2026-05-27 13:38 UTCEPSS rescore
  51. 2026-05-27 13:38 UTCEPSS rescore
  52. 2026-05-26 07:16 UTCEPSS rescore
  53. 2026-05-26 07:16 UTCEPSS rescore
  54. 2026-05-22 21:15 UTCEPSS rescore
  55. 2026-05-22 20:55 UTCEG score recompute
  56. 2026-05-22 20:55 UTCGHSA enrichment
  57. 2026-05-20 22:37 UTCEPSS rescore
  58. 2026-05-20 22:37 UTCEPSS rescore
  59. 2026-05-20 11:21 UTCEPSS rescore
  60. 2026-05-20 11:21 UTCEPSS rescore
  61. 2026-05-20 11:21 UTCEPSS rescore
  62. 2026-05-18 21:30 UTCEPSS rescore
  63. 2026-05-18 21:30 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-39170
    First seen Jan 5, 2016

    Atlassian Confluence 5.2/5.8.14/5.8.15 - Multiple Vulnerabilities

    Open source ↗
  • Nucleihttp/cves/2015/CVE-2015-8399.yaml
    First seen Jan 1, 2015

    Atlassian Confluence <5.8.17 - Information Disclosure

    Open source ↗

Frequently asked(5)

What is CVE-2015-8399?
CVE-2015-8399 is a high vulnerability published on April 11, 2016. Atlassian Confluence before 5.8.17 allows remote authenticated users to read configuration files via the decoratorName parameter to (1) spaces/viewdefaultdecorator.action or (2) admin/viewdefaultdecorator.action.
When was CVE-2015-8399 disclosed?
CVE-2015-8399 was first published in the National Vulnerability Database on April 11, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-8399 actively exploited?
CVE-2015-8399 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 61% probability of exploitation in the next 30 days, which ranks it in the top 0.9% of all scored CVEs.
What is the CVSS score of CVE-2015-8399?
CVE-2015-8399 has a CVSS v3 base score of 4.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.0.
How do I remediate CVE-2015-8399?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-8399, 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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