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Vulnerability details: VCID-wn5q-f98x-1bgu
Vulnerability ID VCID-wn5q-f98x-1bgu
Aliases CVE-2020-14001
GHSA-mqm2-cgpr-p4m6
Summary Unintended read access in kramdown gem The kramdown gem before 2.3.0 for Ruby processes the template option inside Kramdown documents by default, which allows unintended read access (such as template="/etc/passwd") or unintended embedded Ruby code execution (such as a string that begins with template="string://<%= `). NOTE: kramdown is used in Jekyll, GitLab Pages, GitHub Pages, and Thredded Forum.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (7)
CWE-862 Missing Authorization
CWE-20 Improper Input Validation
CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-552 Files or Directories Accessible to External Parties
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 9.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14001.json
epss 0.09348 https://api.first.org/data/v1/epss?cve=CVE-2020-14001
cvssv3.1 7.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 9.8 https://github.com/advisories/GHSA-mqm2-cgpr-p4m6
cvssv3.1 9.8 https://github.com/advisories/GHSA-mqm2-cgpr-p4m6
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-mqm2-cgpr-p4m6
generic_textual CRITICAL https://github.com/advisories/GHSA-mqm2-cgpr-p4m6
cvssv3.1 9.8 https://github.com/gettalong/kramdown
generic_textual CRITICAL https://github.com/gettalong/kramdown
cvssv3.1 9.8 https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde
generic_textual CRITICAL https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde
cvssv3.1 9.8 https://github.com/gettalong/kramdown/compare/REL_2_2_1...REL_2_3_0
generic_textual CRITICAL https://github.com/gettalong/kramdown/compare/REL_2_2_1...REL_2_3_0
cvssv3.1 9.8 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/kramdown/CVE-2020-14001.yml
generic_textual CRITICAL https://github.com/rubysec/ruby-advisory-db/blob/master/gems/kramdown/CVE-2020-14001.yml
cvssv3.1 9.8 https://kramdown.gettalong.org
generic_textual CRITICAL https://kramdown.gettalong.org
cvssv3.1 9.8 https://kramdown.gettalong.org/news.html
generic_textual CRITICAL https://kramdown.gettalong.org/news.html
cvssv3.1 9.8 https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2@%3Cnotifications.fluo.apache.org%3E
generic_textual CRITICAL https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2@%3Cnotifications.fluo.apache.org%3E
cvssv3.1 9.8 https://lists.debian.org/debian-lts-announce/2020/08/msg00014.html
generic_textual CRITICAL https://lists.debian.org/debian-lts-announce/2020/08/msg00014.html
cvssv3.1 9.8 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ
generic_textual CRITICAL https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ
cvssv3.1 9.8 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L
generic_textual CRITICAL https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2020-14001
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2020-14001
cvssv3.1 9.8 https://rubygems.org/gems/kramdown
generic_textual CRITICAL https://rubygems.org/gems/kramdown
cvssv3.1 9.8 https://security.netapp.com/advisory/ntap-20200731-0004
generic_textual CRITICAL https://security.netapp.com/advisory/ntap-20200731-0004
cvssv3.1 9.8 https://usn.ubuntu.com/4562-1
generic_textual CRITICAL https://usn.ubuntu.com/4562-1
cvssv3.1 9.8 https://www.debian.org/security/2020/dsa-4743
generic_textual CRITICAL https://www.debian.org/security/2020/dsa-4743
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14001.json
https://api.first.org/data/v1/epss?cve=CVE-2020-14001
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14001
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/advisories/GHSA-mqm2-cgpr-p4m6
https://github.com/gettalong/kramdown
https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde
https://github.com/gettalong/kramdown/compare/REL_2_2_1...REL_2_3_0
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/kramdown/CVE-2020-14001.yml
https://kramdown.gettalong.org
https://kramdown.gettalong.org/news.html
https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2@%3Cnotifications.fluo.apache.org%3E
https://lists.debian.org/debian-lts-announce/2020/08/msg00014.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L/
https://nvd.nist.gov/vuln/detail/CVE-2020-14001
https://rubygems.org/gems/kramdown
https://security.netapp.com/advisory/ntap-20200731-0004
https://security.netapp.com/advisory/ntap-20200731-0004/
https://usn.ubuntu.com/4562-1
https://usn.ubuntu.com/4562-1/
https://www.debian.org/security/2020/dsa-4743
1858395 https://bugzilla.redhat.com/show_bug.cgi?id=1858395
965305 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=965305
USN-4562-2 https://usn.ubuntu.com/4562-2/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14001.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/advisories/GHSA-mqm2-cgpr-p4m6
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/gettalong/kramdown
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/gettalong/kramdown/compare/REL_2_2_1...REL_2_3_0
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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physical

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/rubysec/ruby-advisory-db/blob/master/gems/kramdown/CVE-2020-14001.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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adjacent_network

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://kramdown.gettalong.org
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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physical

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://kramdown.gettalong.org/news.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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physical

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://lists.apache.org/thread.html/r96df7899fbb456fe2705882f710a0c8e8614b573fbffd8d12e3f54d2@%3Cnotifications.fluo.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://lists.debian.org/debian-lts-announce/2020/08/msg00014.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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physical

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ENMMGKHRQIZ3QKGOMBBBGB6B4LB5I7NQ
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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required

unchanged

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KBLTGBYU7NKOUOHDKVCU4GFZMGA6BP4L
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-14001
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://rubygems.org/gems/kramdown
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://security.netapp.com/advisory/ntap-20200731-0004
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://usn.ubuntu.com/4562-1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

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high

low

none

high

low

none

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://www.debian.org/security/2020/dsa-4743
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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Exploit Prediction Scoring System (EPSS)
Percentile 0.929
EPSS Score 0.09348
Published At May 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-29T09:11:07.531328+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/08/GHSA-mqm2-cgpr-p4m6/GHSA-mqm2-cgpr-p4m6.json 38.6.0