CVE-2011-2931

CVE Descriptions

Cross-site scripting (XSS) vulnerability in the strip_tags helper in actionpack/lib/action_controller/vendor/html-scanner/html/node.rb in Ruby on Rails before 2.3.13, 3.0.x before 3.0.10, and 3.1.x before 3.1.0.rc5 allows remote attackers to inject arbitrary web script or HTML via a tag with an invalid name.

CVE Informations

Related Weaknesses

CWE-ID	Weakness Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Metrics

Metrics	Score	Severity	CVSS Vector	Source
V2	4.3		AV:N/AC:M/Au:N/C:N/I:P/A:N	nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

Date	EPSS V0	EPSS V1	EPSS V2 (> 2022-02-04)	EPSS V3 (> 2025-03-07)	EPSS V4 (> 2025-03-17)
2022-02-06	–	–	3.41%	–	–
2022-02-20	–	–	3.41%	–	–
2022-04-03	–	–	3.41%	–	–
2022-06-26	–	–	3.41%	–	–
2023-02-26	–	–	3.41%	–	–
2023-03-12	–	–	–	0.31%	–
2023-06-04	–	–	–	0.31%	–
2023-10-22	–	–	–	0.31%	–
2024-02-11	–	–	–	0.31%	–
2024-04-14	–	–	–	0.31%	–
2024-06-02	–	–	–	0.31%	–
2024-11-17	–	–	–	0.31%	–
2024-12-22	–	–	–	0.31%	–
2025-01-19	–	–	–	0.31%	–
2025-03-18	–	–	–	–	1.08%
2025-03-30	–	–	–	–	0.81%
2025-04-15	–	–	–	–	0.81%
2025-04-15	–	–	–	–	0.81,%

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

EPSS First.org

Date	Percentile
2022-02-06	66%
2022-02-20	67%
2022-04-03	83%
2022-06-26	84%
2023-02-26	85%
2023-03-12	65%
2023-06-04	66%
2023-10-22	67%
2024-02-11	69%
2024-04-14	7%
2024-06-02	7%
2024-11-17	71%
2024-12-22	7%
2025-01-19	7%
2025-03-18	76%
2025-03-30	72%
2025-04-15	73%
2025-04-15	73%

Products Mentioned

Configuraton 0

Rubyonrails>>Rails >> Version 2.0.0

Rubyonrails>>Rails >> Version 2.0.0 (Open CPE detail)
Rubyonrails>>Rails >> Version 2.0.0 (Open CPE detail)
Rubyonrails>>Rails >> Version 2.0.0 (Open CPE detail)
Rubyonrails>>Rails >> Version 2.0.0 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.0.0

Rubyonrails>>Rails >> Version 2.0.0 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.0.0

Rubyonrails>>Rails >> Version 2.0.0 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.0.1

Rubyonrails>>Rails >> Version 2.0.1 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.0.2

Rubyonrails>>Rails >> Version 2.0.2 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.0.4

Rubyonrails>>Rails >> Version 2.0.4 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.1.0

Rubyonrails>>Rails >> Version 2.1.0 (Open CPE detail)
Rubyonrails>>Rails >> Version 2.1.0 (Open CPE detail)
Rubyonrails>>Rails >> Version 2.1.0 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.1.1

Rubyonrails>>Rails >> Version 2.1.1 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.1.2

Rubyonrails>>Rails >> Version 2.1.2 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.2.0

Rubyonrails>>Rails >> Version 2.2.0 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.2.1

Rubyonrails>>Rails >> Version 2.2.1 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.2.2

Rubyonrails>>Rails >> Version 2.2.2 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.3.2

Rubyonrails>>Rails >> Version 2.3.2 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.3.3

Rubyonrails>>Rails >> Version 2.3.3 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.3.4

Rubyonrails>>Rails >> Version 2.3.4 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.3.9

Rubyonrails>>Rails >> Version 2.3.9 (Open CPE detail)
Rubyonrails>>Rails >> Version 2.3.9 (Open CPE detail)
Rubyonrails>>Rails >> Version 2.3.9 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.3.10

Rubyonrails>>Rails >> Version 2.3.10 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.3.11

Rubyonrails>>Rails >> Version 2.3.11 (Open CPE detail)

Rubyonrails>>Rails >> Version 2.3.12

Rubyonrails>>Rails >> Version 2.3.12 (Open CPE detail)