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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2016-0752

Ruby on Rails Directory Traversal Vulnerability

KEVEXPLOIT ✓HIGH 7.5EPSS 95.5%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Directory traversal vulnerability in Action View in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 allows remote attackers to read arbitrary files by leveraging an application's unrestricted use of the render method and providing a .. (dot dot) in a pathname.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
95.54% probability · 100th percentile
Public exploits
1 in Exploit-DB · verified · first 17 October 2016
CISA KEV
Listed 25 March 2022 · due 15 April 2022
Weakness
CWE-22
Affected
rubyonrails/rails · opensuse/leap · opensuse/opensuse · suse/linux enterprise module for containers · debian/debian linux · redhat/software collections
Source
secalert@redhat.com
EPSS trend
0%50%100%30 October 2026: 95.54%30 October 202630 October 2026

EPSS 95.5% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2016-0752

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-40561source ↗Ruby on Rails - Dynamic Render File Upload / Remote Code Execution (Metasploit)multiple · Metasploitremote17 October 2016yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.