CVE-2015-5301

MEDIUMCVSS v2 · 5.55.5—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.5 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:S/C:N/I:P/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 1.5% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS v2: 5.5Exploit: None knownExposed: 0

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

providers/saml2/admin.py in the Identity Provider (IdP) server in Ipsilon 0.1.0 before 1.0.2 and 1.1.x before 1.1.1 does not properly check permissions, which allows remote authenticated users to cause a denial of service by deleting a SAML2 Service Provider (SP).

CVSS v2.0 (legacy)
5.5MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.5(low)
EG Risk
30(Track)
EG Risk 30/100SSVC: 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
Severity55% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
71%
KEV
Not listed

Published

November 17, 2015

Last Modified

May 6, 2026

References (16)

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
ipsilon1.2.0 ... 3.1.0 (7 versions)——

Data Freshness Timeline

(refreshed 11× in last 7d / 41× 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. 2026-07-26 14:50 UTCEPSS rescore
  2. 2026-07-26 13:54 UTCEG score recompute▲ 5.50
  3. 2026-07-25 14:13 UTCEPSS rescore
  4. 2026-07-24 14:13 UTCEPSS rescore
  5. 2026-07-23 14:14 UTCEPSS rescore
  6. 2026-07-23 01:18 UTCEG score recompute
  7. 2026-07-23 00:20 UTCEG score recompute
  8. 2026-07-22 21:59 UTCEG score recompute
  9. 2026-07-22 14:04 UTCEPSS rescore
  10. 2026-07-21 15:21 UTCEPSS rescore
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  1. 2026-07-09 19:05 UTCEPSS rescore
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  3. 2026-07-08 15:10 UTCEPSS rescore
  4. 2026-07-07 13:42 UTCEPSS rescore
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  6. 2026-07-06 16:24 UTCEPSS rescore
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  11. 2026-06-30 23:19 UTCEPSS rescore
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  17. 2026-06-27 03:05 UTCEPSS rescore
  18. 2026-06-25 13:47 UTCEPSS rescore
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  20. 2026-06-24 14:02 UTCEPSS rescore
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  22. 2026-06-23 21:30 UTCEPSS rescore
  23. 2026-06-21 14:54 UTCEPSS rescore
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  25. 2026-06-21 01:57 UTCEPSS rescore
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  27. 2026-06-19 19:23 UTCEPSS rescore
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  29. 2026-06-18 17:50 UTCEPSS rescore
  30. 2026-06-17 17:50 UTCEPSS rescore
  31. 2026-06-17 17:49 UTCEPSS rescore
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  36. 2026-06-13 22:57 UTCEPSS rescore
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  39. 2026-06-11 13:57 UTCEPSS rescore
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  41. 2026-06-10 22:15 UTCEPSS rescore
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  43. 2026-06-08 14:14 UTCEPSS rescore
  44. 2026-06-07 15:22 UTCEPSS rescore
  45. 2026-06-06 13:45 UTCEPSS rescore
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  49. 2026-06-04 13:10 UTCEPSS rescore
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  51. 2026-06-02 20:10 UTCEPSS rescore
  52. 2026-06-01 13:49 UTCEPSS rescore
  53. 2026-06-01 13:49 UTCEPSS rescore
  54. 2026-05-31 22:28 UTCEPSS rescore
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  56. 2026-05-31 00:14 UTCEPSS rescore
  57. 2026-05-29 13:41 UTCEPSS rescore
  58. 2026-05-28 13:42 UTCEPSS rescore
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  60. 2026-05-27 13:38 UTCEPSS rescore
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  62. 2026-05-26 13:41 UTCEPSS rescore
  63. 2026-05-26 07:16 UTCEPSS rescore
  64. 2026-05-26 07:16 UTCEPSS rescore
  65. 2026-05-24 16:43 UTCEPSS rescore
  66. 2026-05-22 22:36 UTCEG score recompute
  67. 2026-05-22 21:15 UTCEPSS rescore
  68. 2026-05-21 22:40 UTCEPSS rescore
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  71. 2026-05-20 11:21 UTCEPSS rescore
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  74. 2026-05-18 21:30 UTCEPSS rescore
  75. 2026-05-18 21:30 UTCEPSS rescore

Frequently asked(4)

What is CVE-2015-5301?
CVE-2015-5301 is a medium vulnerability published on November 17, 2015. providers/saml2/admin.py in the Identity Provider (IdP) server in Ipsilon 0.1.0 before 1.0.2 and 1.1.x before 1.1.1 does not properly check permissions, which allows remote authenticated users to cause a denial of service by deleting a SAML2 Service Provider (SP).
When was CVE-2015-5301 disclosed?
CVE-2015-5301 was first published in the National Vulnerability Database on November 17, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-5301 actively exploited?
CVE-2015-5301 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 28.5% of all scored CVEs.
How do I remediate CVE-2015-5301?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-5301, 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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