CVE-2011-2197

NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 2%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
—
EG Score
0.0(none)
EPSS
78.2%
KEV
Not listed

Published

June 30, 2011

Last Modified

April 29, 2026

References (14)

Affected Packages

(2 across 1 ecosystem)
RubyGems(2)
PackageVulnerable rangeFixed inDependents
actionpack3.0.0 ... 3.0.8.rc4 (17 versions)3.0.8—
activesupport3.0.0 ... 3.0.8.rc4 (17 versions)3.0.8—

Data Freshness Timeline

(refreshed 8× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 14:03 UTCEPSS rescore
  2. 2026-07-21 15:21 UTCEPSS rescore
  3. 2026-07-20 17:03 UTCEPSS rescore
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  5. 2026-07-19 02:25 UTCEPSS rescore
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  16. 2026-07-06 16:23 UTCEPSS rescore
  17. 2026-07-06 02:19 UTCEPSS rescore
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  20. 2026-07-04 06:27 UTCEPSS rescore
  21. 2026-07-02 14:01 UTCEPSS rescore
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  24. 2026-06-30 23:19 UTCEPSS rescore
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  1. 2026-06-29 14:02 UTCEPSS rescore
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  5. 2026-06-27 03:05 UTCEPSS rescore
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  7. 2026-06-25 13:46 UTCEPSS rescore
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  18. 2026-06-18 17:49 UTCEPSS rescore
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  24. 2026-06-15 17:44 UTCEPSS rescore
  25. 2026-06-14 23:14 UTCEPSS rescore
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  27. 2026-06-13 22:57 UTCEPSS rescore
  28. 2026-06-13 22:57 UTCEPSS rescore
  29. 2026-06-12 23:08 UTCEPSS rescore
  30. 2026-06-11 13:56 UTCEPSS rescore
  31. 2026-06-10 22:14 UTCEPSS rescore
  32. 2026-06-10 13:17 UTCEPSS rescore
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  35. 2026-06-07 15:22 UTCEPSS rescore
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  37. 2026-06-06 13:45 UTCEPSS rescore
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  39. 2026-06-05 22:44 UTCEPSS rescore
  40. 2026-06-05 06:08 UTCEPSS rescore
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  42. 2026-06-04 13:09 UTCEPSS rescore
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  44. 2026-06-02 20:10 UTCEPSS rescore
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  46. 2026-06-01 13:49 UTCEPSS rescore
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  48. 2026-05-31 22:28 UTCEPSS rescore
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  50. 2026-05-31 00:14 UTCEPSS rescore
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  52. 2026-05-29 13:41 UTCEPSS rescore
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  54. 2026-05-29 07:39 UTCEG score recompute
  55. 2026-05-28 13:42 UTCEPSS rescore
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  58. 2026-05-27 13:38 UTCEPSS rescore
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  60. 2026-05-26 13:41 UTCEPSS rescore
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  62. 2026-05-26 07:16 UTCEPSS rescore
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  64. 2026-05-24 16:43 UTCEPSS rescore
  65. 2026-05-22 21:15 UTCEPSS rescore
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  68. 2026-05-20 22:37 UTCEPSS rescore
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  74. 2026-05-18 21:29 UTCEPSS rescore
  75. 2026-05-18 21:29 UTCEPSS rescore

Frequently asked(4)

What is CVE-2011-2197?
CVE-2011-2197 is a none vulnerability published on June 30, 2011. 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…
When was CVE-2011-2197 disclosed?
CVE-2011-2197 was first published in the National Vulnerability Database on June 30, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-2197 actively exploited?
CVE-2011-2197 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 78.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-2197?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-2197, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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