CVE-2015-8813

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 11.6%, top 4% 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, nvd
Elevated
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 11%CVSS: 8.2Exploit: Elevated riskExposed: 0

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

The Page_Load function in Umbraco.Web/umbraco.presentation/umbraco/dashboard/FeedProxy.aspx.cs in Umbraco before 7.4.0 allows remote attackers to conduct server-side request forgery (SSRF) attacks via the url parameter.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: 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
Severity82% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
11%
EPSS %ILE
96%
KEV
Not listed

Published

March 3, 2017

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Sep 8, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

oss-security - Re: Umbraco - The open source ASP.NET CMS Multiple Vulnerabilities

http://www.openwall.com/lists/oss-security/2016/02/17/5
generic

oss-security - Re: Re: Umbraco - The open source ASP.NET CMS Multiple Vulnerabilities

http://www.openwall.com/lists/oss-security/2016/02/17/1
generic

oss-security - Re: Umbraco - The open source ASP.NET CMS Multiple Vulnerabilities

http://www.openwall.com/lists/oss-security/2016/02/16/10
github_commit

commit 924a016ffe7a (umbraco/Umbraco-CMS)

Fix landed in umbraco/Umbraco-CMS commit 924a016ffe7a — awaiting tagged release

https://github.com/umbraco/Umbraco-CMS/commit/924a016ffe7ae7ea6d516c07a7852f0095eddbce
generic

oss-security - Re: Re: Umbraco - The open source ASP.NET CMS Multiple Vulnerabilities

http://www.openwall.com/lists/oss-security/2016/02/18/8

Affected Packages

(1 across 1 ecosystem)
NuGet(1)
PackageVulnerable rangeFixed inDependents
Umbraco.CMS—7.4.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 18× 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 111 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

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

  • Nucleihttp/cves/2015/CVE-2015-8813.yaml
    First seen Jan 1, 2015

    Umbraco <7.4.0- Server-Side Request Forgery

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2015-8813?
CVE-2015-8813 is a high vulnerability published on March 3, 2017. The Page_Load function in Umbraco.Web/umbraco.presentation/umbraco/dashboard/FeedProxy.aspx.cs in Umbraco before 7.4.0 allows remote attackers to conduct server-side request forgery (SSRF) attacks via the url parameter.
When was CVE-2015-8813 disclosed?
CVE-2015-8813 was first published in the National Vulnerability Database on March 3, 2017, 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-2015-8813 actively exploited?
CVE-2015-8813 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11% probability of exploitation in the next 30 days, which ranks it in the top 4.3% of all scored CVEs.
What is the CVSS score of CVE-2015-8813?
CVE-2015-8813 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2015-8813?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-8813, 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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