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CVE-2015-8474

Status: ModifiedHigh (7.4)—
Severity7.4High · CVSS 3.0
Exploitation probability1.85 %higher than 79% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Open redirect vulnerability in the valid_back_url function in app/controllers/application_controller.rb in Redmine before 2.6.7, 3.0.x before 3.0.5, and 3.1.x before 3.1.1 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a crafted back_url parameter, as demonstrated by "@attacker.com," a different vulnerability than CVE-2014-1985.

CVSS

Base score
7.4
Version
3.0
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
1.85 %
Percentile among all scored CVEs
79
Score date
10/24/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (2)

Debian — Debian LinuxRedmine — Redmine

CWEs

References

Show 10 references

Raw JSON (NVD)

Show
{
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      "value": "Open redirect vulnerability in the valid_back_url function in app/controllers/application_controller.rb in Redmine before 2.6.7, 3.0.x before 3.0.5, and 3.1.x before 3.1.1 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a crafted back_url parameter, as demonstrated by \"@attacker.com,\" a different vulnerability than CVE-2014-1985."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de redirección abierta en la función valid_back_url en app/controllers/application_controller.rb en Redmine en versiones anteriores a 2.6.7, 3.0.x en versiones anteriores a 3.0.5 y 3.1.x en versiones anteriores a 3.1.1 permite a atacantes remotos redirigir a usuarios a sitios web arbitrarios y llevar a cabo ataques de phishing a través de un parámetro back_url manipulado, según lo demostrado por \"@attacker.com\", una vulnerabilidad diferente a CVE-2014-1985."
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  "lastModified": "2026-06-17T00:34:37.890",
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}