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ExploitedIn CISA KEVFix available

CVE-2016-0752

Exploitation confirmed. First attested on 2022-03-25 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2016-02-16
  • Fixed in4.2.5.1 · 4.1.14.1 · 3.2.22.1
  • WeaknessCWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2016-02-1602:59CVE publishedNVD
  2. 2022-03-25Listed as exploited by GCVEGCVE
  3. 2022-03-25Exploitation first reportedCISA KEV
  4. 2022-03-25Added to the CISA KEV catalogCISA KEV
  5. 2025-02-0713:26SSVC exploitation set to activeCISA-ADP
  6. 2026-10-2319:23First public proof of conceptPoC-in-GitHub
  7. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-0752?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-0752?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Ruby on Rails
BranchAffectedFixed in
4.2≥ 4.2.0, < 4.2.5.14.2.5.1
4.x≥ 4.0.0, < 4.1.14.14.1.14.1
3.2< 3.2.22.13.2.22.1
5.0= 5.0.0no fix published
Debian debian linux
BranchAffectedFixed in
8.0= 8.0no fix published
Opensuse
BranchAffectedFixed in
13.2= 13.2no fix published

3 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Ruby on Rails to 4.2.5.1 · 4.1.14.1 · 3.2.22.1
  2. CISA’s required action: Apply updates per vendor instructions.due 2022-04-15

Detection

read 2026-10-23 19:23 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedforced-request/rails-rce-cve-2016-0752dachidahu/CVE-2016-0752
PoC-in-GitHub

CISA Known Exploited Vulnerability

Date Added
2022-03-25
Patch Due Date
2022-04-15
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2016-02-16
Last Modified
2026-06-17
NVD status
Analyzed

Frequently asked questions

What is CVE-2016-0752?

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.

Is CVE-2016-0752 actively exploited?

Yes. CVE-2016-0752 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-04-15.

What is the CVSS score for CVE-2016-0752?

CVE-2016-0752 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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