CVE-2015-2963

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2015-07-10 · updated 2026-06-17
Weakness: CWE-79

Description

The thoughtbot paperclip gem before 4.2.2 for Ruby does not consider the content-type value during media-type validation, which allows remote attackers to upload HTML documents and conduct cross-site scripting (XSS) attacks via a spoofed value, as demonstrated by image/jpeg.

Affected products

thoughtbot paperclip ruby gem: through 4.2.1

References

http://jvn.jp/en/jp/JVN83881261/index.html
http://jvndb.jvn.jp/jvndb/JVNDB-2015-000088
http://openwall.com/lists/oss-security/2015/06/19/3
http://www.securityfocus.com/bid/75304
https://github.com/thoughtbot/paperclip/commit/9aee4112f36058cd28d5fe4a006d6981bd1eda57
https://robots.thoughtbot.com/paperclip-security-release
http://jvn.jp/en/jp/JVN83881261/index.html
http://jvndb.jvn.jp/jvndb/JVNDB-2015-000088
http://openwall.com/lists/oss-security/2015/06/19/3
http://www.securityfocus.com/bid/75304
https://github.com/thoughtbot/paperclip/commit/9aee4112f36058cd28d5fe4a006d6981bd1eda57
https://robots.thoughtbot.com/paperclip-security-release

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