CVE-2020-26298

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Source
https://cve.org/CVERecord?id=CVE-2020-26298
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-26298.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-26298
Aliases
Downstream
Related
Published
2021-01-11T19:15:13.133Z
Modified
2026-05-30T15:45:55.435731Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

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.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "CPE_STRING",
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "last_affected": "9.0"
                },
                {
                    "last_affected": "10.0"
                }
            ],
            "vendor_product": "debian:debian_linux"
        }
    ]
}
References

Affected packages

Git / github.com/vmg/redcarpet

Affected ranges

Type
GIT
Repo
https://github.com/vmg/redcarpet
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a699c82292b17c8e6a62e1914d5eccc252272793
Database specific 
{
    "cpe": "cpe:2.3:a:redcarpet_project:redcarpet:*:*:*:*:*:ruby:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.5.1"
        }
    ]
}

Affected versions

v1.*
v1.17.2
v2.*
v2.0.0
v2.0.1
v2.1.0
v2.1.1
v2.2.0
v2.2.1
v2.2.2
v3.*
v3.0.0
v3.1.1
v3.2.0
v3.3.0
v3.3.1
v3.3.2
v3.3.3
v3.3.4
v3.4.0
v3.5.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-26298.json"
vanir_signatures_modified 
"2026-05-30T15:45:55Z"
vanir_signatures 
[
    {
        "signature_version": "v1",
        "id": "CVE-2020-26298-bc2a74b8",
        "source": "https://github.com/vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793",
        "target": {
            "file": "ext/redcarpet/html.c"
        },
        "signature_type": "Line",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "198197667677715849428623281048180277561",
                "54830763969004594676731107425085190938",
                "97811103998125843691871254455650728211",
                "139603207368515949909553120480638757958",
                "313289017949240420953274720090354965485"
            ],
            "threshold": 0.9
        }
    },
    {
        "signature_version": "v1",
        "id": "CVE-2020-26298-ccd1bdea",
        "source": "https://github.com/vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793",
        "target": {
            "file": "ext/redcarpet/html.c",
            "function": "rndr_quote"
        },
        "signature_type": "Function",
        "deprecated": false,
        "digest": {
            "function_hash": "244524669993411248594301671481377802264",
            "length": 249.0
        }
    }
]