CVE-2019-5418
100Vexday Risk Score
Patch now. It under exploitation confirmed by CISA and has a working public exploit.
ssvc Actcvss 7.5epss 99%
from disclosure to weapon0 days
Published on NVDMar 27
1st PoCMar 16
CISA KEV+2294d
exploitation probability
99%top 1% of all CVEs
observed exploitation
yesCISA + VulnCheck
19 public exploit(s)
Action required by CISAfederal deadline: 2025-07-28
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Versions
Affected
rubygems/actionview >= 5.1.0, <= 5.1.6.1; rubygems/actionview >= 5.0.0, <= 5.0.7.1; rubygems/actionview >= 5.2.0, <= 5.2.2.0; rubygems/actionview >= 4.0.0, <= 4.2.11.0
Fixed in
rubygems/actionview 5.1.6.2; rubygems/actionview 5.0.7.2; rubygems/actionview 5.2.2.1; rubygems/actionview 4.2.11.1
Researched and written with AI from the vendor advisory and public analysis, with the sources above. Always confirm the fixed version in the official advisory before acting.
There is a File Content Disclosure vulnerability in Action View <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 and v3 where specially crafted accept headers can cause contents of arbitrary files on the target system's filesystem to be exposed.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
Rails · https://github.com/rails/railspublic PoCs found — 19
exploitdbwww.exploit-db.com/exploits/46585unverifiedgithubgithub.com/mpgn/CVE-2019-5418★ 201githubgithub.com/mpgn/Rails-doubletap-RCE★ 133githubgithub.com/brompwnie/CVE-2019-5418-Scanner★ 36githubgithub.com/random-robbie/CVE-2019-5418★ 5githubgithub.com/omarkurt/CVE-2019-5418★ 5githubgithub.com/Bad3r/RailroadBandit★ 3githubgithub.com/kailing0220/CVE-2019-5418★ 2githubgithub.com/daehyeok0618/CVE-2019-5418★ 0githubgithub.com/melardev/CVE-2019-5418★ 0githubgithub.com/ztgrace/CVE-2019-5418-Rails3★ 0vulncheckvulncheck.com/xdb/34f001d1be76unverifiedvulncheckvulncheck.com/xdb/cefcc3ffbf85unverifiedvulncheckvulncheck.com/xdb/f2ddbe7de150unverifiedcve_referencewww.exploit-db.com/exploits/46585/unverifiedcve_referencepacketstormsecurity.com/files/152178/Rails-5.2.1-Arbitrary-File-Content-Disclosure.htmlunverifiedvulncheckvulncheck.com/xdb/7ec4db8cca50unverifiedvulncheckvulncheck.com/xdb/b79d8b670127unverifiedvulncheckvulncheck.com/xdb/2a15ef59cca5unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00011.htmlhttp://packetstormsecurity.com/files/152178/Rails-5.2.1-Arbitrary-File-Content-Disclosure.htmlhttps://access.redhat.com/errata/RHSA-2019:0796https://access.redhat.com/errata/RHSA-2019:1147https://access.redhat.com/errata/RHSA-2019:1149https://access.redhat.com/errata/RHSA-2019:1289https://groups.google.com/forum/#%21topic/rubyonrails-security/pFRKI96Sm8Qhttps://lists.debian.org/debian-lts-announce/2019/03/msg00042.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y43636TH4D6T46IC6N2RQVJTRFJAAYGA/https://web.archive.org/web/20190313201629/https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5418