CVE-2015-9284

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 1.6%, top 27% 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
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.8Exploit: None knownExposed: 0

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

The request phase of the OmniAuth Ruby gem (1.9.1 and earlier) is vulnerable to Cross-Site Request Forgery when used as part of the Ruby on Rails framework, allowing accounts to be connected without user intent, user interaction, or feedback to the user. This permits a secondary account to be able to sign into the web application as the primary account.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity88% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
74%
KEV
Not listed

Published

April 26, 2019

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Aug 17, 2026
No patch confirmed yet. Sources: github_pr.
generic

oss-security - CVE Request: CSRF vulnerability in OmniAuth request phase

https://www.openwall.com/lists/oss-security/2015/05/26/11
github_pr

Protect request phase against CSRF when Rails is used.

Upstream fix in progress (PR #809 · omniauth/omniauth, state=closed)

https://github.com/omniauth/omniauth/pull/809
github_pr

Protect request phase against CSRF.

Upstream fix in progress (PR #1 · omniauth/omniauth-rails, state=closed)

https://github.com/omniauth/omniauth-rails/pull/1

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
ruby-omniauth1.9.1-1 ... 2.1.4-1 (10 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
ruby-omniauth—2.0.4-2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
ruby-omniauth—2.0.4-2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
ruby-omniauth—2.0.4-2—
RubyGems(1)
PackageVulnerable rangeFixed inDependents
omniauth0.0.1 ... 2.0.0.pre.rc1 (60 versions)2.0.0—

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.

Showing the most recent 100 of 132 total refreshes for this CVE.

  1. 2026-09-18 19:22 UTCEPSS rescore
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  74. 2026-06-15 02:43 UTCOSV refresh
  75. 2026-06-14 23:14 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2015-9284?
CVE-2015-9284 is a high vulnerability published on April 26, 2019. The request phase of the OmniAuth Ruby gem (1.9.1 and earlier) is vulnerable to Cross-Site Request Forgery when used as part of the Ruby on Rails framework, allowing accounts to be connected without user intent, user interaction, or feedback to the user. This permits a secondary account to be able…
When was CVE-2015-9284 disclosed?
CVE-2015-9284 was first published in the National Vulnerability Database on April 26, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-9284 actively exploited?
CVE-2015-9284 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 25.7% of all scored CVEs.
What is the CVSS score of CVE-2015-9284?
CVE-2015-9284 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2015-9284?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-9284, 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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