Redcarpet is a Ruby library for Markdown processing. In Redcarpet before version 3.5.1, there is an injection vulnerability which can enable a cross-site scripting attack. In affected versions no HTML escaping was being performed when processing quotes. This applies even when the `:escape_html` option was being used. This is fixed in version 3.5.1 by the referenced commit.

The remote Fedora 37 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2023-8682a0e17d advisory.

    A security flow was found on redcarpet that escaping html was not properly done even if requested on some     cases which may cause XSS vulnerability. This issue is now assigned as CVE-2020-26298. This new rpm should     fix this issue.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 38 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2023-44daa9c1d4 advisory.

    A security flow was found on redcarpet that escaping html was not properly done even if requested on some     cases which may cause XSS vulnerability. This issue is now assigned as CVE-2020-26298. This new rpm should     fix this issue.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 36 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2023-597f13ffb9 advisory.

    A security flow was found on redcarpet that escaping html was not properly done even if requested on some     cases which may cause XSS vulnerability. This issue is now assigned as CVE-2020-26298. This new rpm should     fix this issue.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

In Redcarpet before version 3.5.1, there is an injection vulnerability which can enable a cross-site scripting attack.

In affected versions, no HTML escaping was being performed when processing quotes. This applies even when the `:escape_html` option was being used.

For Debian 9 stretch, this problem has been fixed in version 3.3.4-2+deb9u1.

We recommend that you upgrade your ruby-redcarpet packages.

For the detailed security status of ruby-redcarpet please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/ruby-redcarpet

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Johan Smits discovered that ruby-redcarpet, a markdown parser, did not properly validate its input. This would allow an attacker to mount a cross-site scripting attack.

ID	Name	Product	Family	Severity
175307	Fedora 37 : rubygem-redcarpet (2023-8682a0e17d)	Nessus	Fedora Local Security Checks	medium
175306	Fedora 38 : rubygem-redcarpet (2023-44daa9c1d4)	Nessus	Fedora Local Security Checks	medium
175304	Fedora 36 : rubygem-redcarpet (2023-597f13ffb9)	Nessus	Fedora Local Security Checks	medium
145217	Debian DLA-2526-1 : ruby-redcarpet security update	Nessus	Debian Local Security Checks	medium
145132	Debian DSA-4831-1 : ruby-redcarpet - security update	Nessus	Debian Local Security Checks	medium

Detections

Analytics

CVE-2020-26298

medium

Tenable Plugins

medium

medium

medium

medium

medium