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CVE-2024-28199

20
FAUCET Score

CVE-2024-28199 is a cross-site scripting (XSS) vulnerability in the Phlex Ruby framework, affecting all 1.x minor versions. It arises from improper case-sensitivity checks, allowing malicious JavaScript injection through user-provided links in href attributes or through splatted user-provided attributes on any HTML tag. Rated Medium (CVSS 6.1), it requires user interaction (UI:R) and could lead to low confidentiality and integrity impacts (C:L, I:L). There is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1CPE matchmatch criteria
cpe:2.3:a:phlex:phlex:*:*:*:*:*:ruby:*:*
>= 1.2.0, < 1.2.2CPE matchmatch criteria
cpe:2.3:a:phlex:phlex:*:*:*:*:*:ruby:*:*
>= 1.3.0, < 1.3.3CPE matchmatch criteria
cpe:2.3:a:phlex:phlex:*:*:*:*:*:ruby:*:*
1.1.0CPE matchmatch criteria
cpe:2.3:a:phlex:phlex:1.1.0:*:*:*:*:ruby:*:*
1.4.0CPE matchmatch criteria
cpe:2.3:a:phlex:phlex:1.4.0:*:*:*:*:ruby:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
45.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 48th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (11)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: phlexFixed in: 1.8.2
rubygemspatch availablevia ghsa
Product: phlexFixed in: 1.7.1
rubygemspatch availablevia ghsa
Product: phlexFixed in: 1.6.2
rubygemspatch availablevia ghsa
Product: phlexFixed in: 1.5.2
rubygemspatch availablevia ghsa
Product: phlexFixed in: 1.9.1
rubygemspatch availablevia ghsa
Product: phlexFixed in: 1.3.3
rubygemspatch availablevia ghsa
Product: phlexFixed in: 1.2.2
rubygemspatch availablevia ghsa
Product: phlexFixed in: 1.1.1
rubygemspatch availablevia ghsa
Product: phlexFixed in: 1.0.1
rubygemspatch availablevia ghsa
Product: phlexFixed in: 1.4.1

Vendor Advisories (1)

rubygemsGHSA-242p-4v39-2v8ghigh

Cross-site Scripting (XSS) possible with maliciously formed HTML attribute names and values in Phlex

Mar 12, 2024

References

developer.mozilla.org / en-US/docs/Web/HTTP/Headers/Content-Security-Policy
Technical Description
developer.mozilla.org / en-US/docs/Web/HTTP/Headers/Content-Security-Policy
Technical Description
github.com / phlex-ruby/phlex/commit/aa50c604cdee1d0ce7ef068a4c66cbd5d43f96a1
Patch
github.com / phlex-ruby/phlex/security/advisories/GHSA-242p-4v39-2v8g
PatchVendor Advisory