Skip to content
Fencer Intel
medium 4.3

CVE-2011-2197 json

rails Cross-site Scripting vulnerability

published 2011-06-30 15 y ago modified 2026-06-16 4 mo ago also GHSA-v9v4-7jp6-8c73 , EUVD-2017-0312

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

The cross-site scripting (XSS) prevention feature in Ruby on Rails 2.x before 2.3.12, 3.0.x before 3.0.8, and 3.1.x before 3.1.0.rc2 does not properly handle mutation of safe buffers, which makes it easier for remote attackers to conduct XSS attacks via crafted strings to an application that uses a problematic string method, as demonstrated by the sub method.

Patch / fix

  • rubygems actionpack 2.3.12, 3.0.8
  • rubygems activesupport 2.3.12, 3.0.8

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-2197 updated cvss 4.3

rubygem-activesupport: XSS due improper management of safe buffers

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.96% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected packages

ecosystem package affected fixed in
rubygems actionpack
>=2.0.0, <2.3.12
>=3.0.0, <3.0.8
2.3.12
3.0.8
rubygems activesupport
>=2.0.0, <2.3.12
>=3.0.0, <3.0.8
2.3.12
3.0.8

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.