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PYSEC-2023-23
Vulnerability from pysec - Published: 2023-02-22 23:15 - Updated: 2023-05-04 03:49
VLAI
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Impacted products
| Name | purl | markdown-it-py | pkg:pypi/markdown-it-py |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "markdown-it-py",
"purl": "pkg:pypi/markdown-it-py"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
}
],
"repo": "https://github.com/executablebooks/markdown-it-py",
"type": "GIT"
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.1.0",
"0.1.1",
"0.2.0",
"0.2.1",
"0.2.2",
"0.2.3",
"0.3.0",
"0.3.1",
"0.3.2",
"0.3.3",
"0.4.0",
"0.4.1",
"0.4.2",
"0.4.3",
"0.4.4",
"0.4.5",
"0.4.6",
"0.4.7",
"0.4.8",
"0.4.9",
"0.5.0",
"0.5.1",
"0.5.2",
"0.5.3",
"0.5.4",
"0.5.5",
"0.5.6",
"0.5.7",
"0.5.8",
"0.6.0",
"0.6.1",
"0.6.2",
"1.0.0",
"1.0.0b1",
"1.0.0b2",
"1.0.0b3",
"1.1.0",
"2.0.0",
"2.0.1",
"2.1.0"
]
}
],
"aliases": [
"CVE-2023-26302",
"GHSA-jrwr-5x3p-hvc3"
],
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "PYSEC-2023-23",
"modified": "2023-05-04T03:49:46.254022Z",
"published": "2023-02-22T23:15:00Z",
"references": [
{
"type": "FIX",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-jrwr-5x3p-hvc3"
}
]
}
BREW-DVC-CVE-2023-26302 (GHSA-JRWR-5X3P-HVC3)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:44 – Updated: 2026-09-17 19:47 – Source website
VLAI
Summary
markdown-it-py Denial of Service vulnerability in the command line interface
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Severity
References
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "markdown-it-py",
"resource_purl": "pkg:pypi/markdown-it-py@4.2.0",
"upstream_fixed_in": "2.2.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "dvc",
"purl": "pkg:brew/dvc"
},
"ranges": [
{
"events": [
{
"introduced": "2.42.0"
},
{
"fixed": "2.46.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/markdown-it-py@4.2.0",
"name": "markdown-it-py",
"resource": "markdown-it-py",
"strategy": "registry",
"subject_version": "4.2.0"
}
]
},
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "BREW-dvc-CVE-2023-26302",
"modified": "2026-09-17T19:47:02Z",
"published": "2026-08-13T16:44:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26302"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/pull/247"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "PACKAGE",
"url": "https://github.com/executablebooks/markdown-it-py"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown-it-py Denial of Service vulnerability in the command line interface",
"upstream": [
"GHSA-jrwr-5x3p-hvc3",
"CVE-2023-26302",
"PYSEC-2023-23"
]
}
BREW-ESPHOME-CVE-2023-26302 (GHSA-JRWR-5X3P-HVC3)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:45 – Updated: 2026-09-09 23:53 – Source website
VLAI
Summary
markdown-it-py Denial of Service vulnerability in the command line interface
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "markdown-it-py",
"resource_purl": "pkg:pypi/markdown-it-py@4.2.0",
"upstream_fixed_in": "2.2.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "esphome",
"purl": "pkg:brew/esphome"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2026.7.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/markdown-it-py@4.2.0",
"name": "markdown-it-py",
"resource": "markdown-it-py",
"strategy": "registry",
"subject_version": "4.2.0"
}
]
},
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "BREW-esphome-CVE-2023-26302",
"modified": "2026-09-09T23:53:49Z",
"published": "2026-08-13T16:45:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26302"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/pull/247"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "PACKAGE",
"url": "https://github.com/executablebooks/markdown-it-py"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown-it-py Denial of Service vulnerability in the command line interface",
"upstream": [
"GHSA-jrwr-5x3p-hvc3",
"CVE-2023-26302",
"PYSEC-2023-23"
]
}
BREW-ESPTOOL-CVE-2023-26302 (GHSA-JRWR-5X3P-HVC3)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:45 – Updated: 2026-09-09 23:53 – Source website
VLAI
Summary
markdown-it-py Denial of Service vulnerability in the command line interface
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "markdown-it-py",
"resource_purl": "pkg:pypi/markdown-it-py@4.2.0",
"upstream_fixed_in": "2.2.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "esptool",
"purl": "pkg:brew/esptool"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.3.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/markdown-it-py@4.2.0",
"name": "markdown-it-py",
"resource": "markdown-it-py",
"strategy": "registry",
"subject_version": "4.2.0"
}
]
},
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "BREW-esptool-CVE-2023-26302",
"modified": "2026-09-09T23:53:49Z",
"published": "2026-08-13T16:45:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26302"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/pull/247"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "PACKAGE",
"url": "https://github.com/executablebooks/markdown-it-py"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown-it-py Denial of Service vulnerability in the command line interface",
"upstream": [
"GHSA-jrwr-5x3p-hvc3",
"CVE-2023-26302",
"PYSEC-2023-23"
]
}
BREW-FASTAPI-CVE-2023-26302 (GHSA-JRWR-5X3P-HVC3)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:46 – Updated: 2026-09-09 23:55 – Source website
VLAI
Summary
markdown-it-py Denial of Service vulnerability in the command line interface
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "markdown-it-py",
"resource_purl": "pkg:pypi/markdown-it-py@4.2.0",
"upstream_fixed_in": "2.2.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "fastapi",
"purl": "pkg:brew/fastapi"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.141.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/markdown-it-py@4.2.0",
"name": "markdown-it-py",
"resource": "markdown-it-py",
"strategy": "registry",
"subject_version": "4.2.0"
}
]
},
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "BREW-fastapi-CVE-2023-26302",
"modified": "2026-09-09T23:55:50Z",
"published": "2026-08-13T16:46:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26302"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/pull/247"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "PACKAGE",
"url": "https://github.com/executablebooks/markdown-it-py"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown-it-py Denial of Service vulnerability in the command line interface",
"upstream": [
"GHSA-jrwr-5x3p-hvc3",
"CVE-2023-26302",
"PYSEC-2023-23"
]
}
BREW-FASTMCP-CVE-2023-26302 (GHSA-JRWR-5X3P-HVC3)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:46 – Updated: 2026-09-09 23:56 – Source website
VLAI
Summary
markdown-it-py Denial of Service vulnerability in the command line interface
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "markdown-it-py",
"resource_purl": "pkg:pypi/markdown-it-py@4.2.0",
"upstream_fixed_in": "2.2.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "fastmcp",
"purl": "pkg:brew/fastmcp"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.7"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/markdown-it-py@4.2.0",
"name": "markdown-it-py",
"resource": "markdown-it-py",
"strategy": "registry",
"subject_version": "4.2.0"
}
]
},
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "BREW-fastmcp-CVE-2023-26302",
"modified": "2026-09-09T23:56:32Z",
"published": "2026-08-13T16:46:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26302"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/pull/247"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "PACKAGE",
"url": "https://github.com/executablebooks/markdown-it-py"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown-it-py Denial of Service vulnerability in the command line interface",
"upstream": [
"GHSA-jrwr-5x3p-hvc3",
"CVE-2023-26302",
"PYSEC-2023-23"
]
}
BREW-FAVA-CVE-2023-26302 (GHSA-JRWR-5X3P-HVC3)
Vulnerability from osv_homebrew – Published: 2026-08-17 17:05 – Updated: 2026-09-09 23:56 – Source website
VLAI
Summary
markdown-it-py Denial of Service vulnerability in the command line interface
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "markdown-it-py",
"resource_purl": "pkg:pypi/markdown-it-py@4.2.0",
"upstream_fixed_in": "2.2.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "fava",
"purl": "pkg:brew/fava"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.30.15"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/markdown-it-py@4.2.0",
"name": "markdown-it-py",
"resource": "markdown-it-py",
"strategy": "registry",
"subject_version": "4.2.0"
}
]
},
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "BREW-fava-CVE-2023-26302",
"modified": "2026-09-09T23:56:33Z",
"published": "2026-08-17T17:05:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26302"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/pull/247"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "PACKAGE",
"url": "https://github.com/executablebooks/markdown-it-py"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown-it-py Denial of Service vulnerability in the command line interface",
"upstream": [
"GHSA-jrwr-5x3p-hvc3",
"CVE-2023-26302",
"PYSEC-2023-23"
]
}
BREW-FLEXGET-CVE-2023-26302 (GHSA-JRWR-5X3P-HVC3)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:47 – Updated: 2026-09-09 23:58 – Source website
VLAI
Summary
markdown-it-py Denial of Service vulnerability in the command line interface
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "markdown-it-py",
"resource_purl": "pkg:pypi/markdown-it-py@4.2.0",
"upstream_fixed_in": "2.2.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "flexget",
"purl": "pkg:brew/flexget"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.20.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/markdown-it-py@4.2.0",
"name": "markdown-it-py",
"resource": "markdown-it-py",
"strategy": "registry",
"subject_version": "4.2.0"
}
]
},
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "BREW-flexget-CVE-2023-26302",
"modified": "2026-09-09T23:58:04Z",
"published": "2026-08-13T16:47:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26302"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/pull/247"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "PACKAGE",
"url": "https://github.com/executablebooks/markdown-it-py"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown-it-py Denial of Service vulnerability in the command line interface",
"upstream": [
"GHSA-jrwr-5x3p-hvc3",
"CVE-2023-26302",
"PYSEC-2023-23"
]
}
BREW-FOBIS-CVE-2023-26302 (GHSA-JRWR-5X3P-HVC3)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:48 – Updated: 2026-09-09 23:58 – Source website
VLAI
Summary
markdown-it-py Denial of Service vulnerability in the command line interface
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "markdown-it-py",
"resource_purl": "pkg:pypi/markdown-it-py@4.2.0",
"upstream_fixed_in": "2.2.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "fobis",
"purl": "pkg:brew/fobis"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.8.22"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/markdown-it-py@4.2.0",
"name": "markdown-it-py",
"resource": "markdown-it-py",
"strategy": "registry",
"subject_version": "4.2.0"
}
]
},
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "BREW-fobis-CVE-2023-26302",
"modified": "2026-09-09T23:58:39Z",
"published": "2026-08-13T16:48:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26302"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/pull/247"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "PACKAGE",
"url": "https://github.com/executablebooks/markdown-it-py"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown-it-py Denial of Service vulnerability in the command line interface",
"upstream": [
"GHSA-jrwr-5x3p-hvc3",
"CVE-2023-26302",
"PYSEC-2023-23"
]
}
BREW-FORD-CVE-2023-26302 (GHSA-JRWR-5X3P-HVC3)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:48 – Updated: 2026-09-09 23:58 – Source website
VLAI
Summary
markdown-it-py Denial of Service vulnerability in the command line interface
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "markdown-it-py",
"resource_purl": "pkg:pypi/markdown-it-py@4.2.0",
"upstream_fixed_in": "2.2.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "ford",
"purl": "pkg:brew/ford"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "7.0.13_2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/markdown-it-py@4.2.0",
"name": "markdown-it-py",
"resource": "markdown-it-py",
"strategy": "registry",
"subject_version": "4.2.0"
}
]
},
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "BREW-ford-CVE-2023-26302",
"modified": "2026-09-09T23:58:41Z",
"published": "2026-08-13T16:48:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26302"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/pull/247"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "PACKAGE",
"url": "https://github.com/executablebooks/markdown-it-py"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown-it-py Denial of Service vulnerability in the command line interface",
"upstream": [
"GHSA-jrwr-5x3p-hvc3",
"CVE-2023-26302",
"PYSEC-2023-23"
]
}
BREW-GGSHIELD-CVE-2023-26302 (GHSA-JRWR-5X3P-HVC3)
Vulnerability from osv_homebrew – Published: 2026-08-13 16:50 – Updated: 2026-09-10 00:00 – Source website
VLAI
Summary
markdown-it-py Denial of Service vulnerability in the command line interface
Details
Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.
Severity
References
| URL | Type | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "markdown-it-py",
"resource_purl": "pkg:pypi/markdown-it-py@4.2.0",
"upstream_fixed_in": "2.2.0"
},
"package": {
"ecosystem": "Homebrew",
"name": "ggshield",
"purl": "pkg:brew/ggshield"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.53.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/markdown-it-py@4.2.0",
"name": "markdown-it-py",
"resource": "markdown-it-py",
"strategy": "registry",
"subject_version": "4.2.0"
}
]
},
"details": "Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.",
"id": "BREW-ggshield-CVE-2023-26302",
"modified": "2026-09-10T00:00:09Z",
"published": "2026-08-13T16:50:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26302"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/pull/247"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c"
},
{
"type": "PACKAGE",
"url": "https://github.com/executablebooks/markdown-it-py"
},
{
"type": "WEB",
"url": "https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown-it-py Denial of Service vulnerability in the command line interface",
"upstream": [
"GHSA-jrwr-5x3p-hvc3",
"CVE-2023-26302",
"PYSEC-2023-23"
]
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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