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10 vulnerabilities found for markdown-it by markdown-it_project
CVE-2026-2327 (GCVE-0-2026-2327)
Vulnerability from nvd – Published: 2026-02-12 05:00 – Updated: 2026-02-12 14:41
VLAI
Summary
Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Regular Expression Denial of Service (ReDoS)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | markdown-it |
Affected:
13.0.0 , < 14.1.1
(semver)
|
Credits
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CVE-2025-7969 (GCVE-0-2025-7969)
Vulnerability from nvd – Published: 2025-08-21 16:40 – Updated: 2025-12-03 21:06 Disputed
VLAI
Title
Markdown-it 14.1.0 - Cross-site scripting (XSS)
Summary
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in markdown-it allows Cross-Site Scripting (XSS). This vulnerability is associated with program files lib/renderer.mjs.
This issue affects markdown-it: 14.1.0. NOTE: the Supplier does not consider this issue to be a vulnerability.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://fluidattacks.com/advisories/fito | third-party-advisory |
| https://github.com/markdown-it/markdown-it | product |
| https://github.com/markdown-it/markdown-it/issues/1122 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| markdown-it | markdown-it |
Affected:
14.1.0
(custom)
|
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CVE-2015-10005 (GCVE-0-2015-10005)
Vulnerability from nvd – Published: 2022-12-27 08:05 – Updated: 2025-04-11 15:09
VLAI
Title
markdown-it html_re.js redos
Summary
A vulnerability was found in markdown-it up to 2.x. It has been classified as problematic. Affected is an unknown function of the file lib/common/html_re.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 3.0.0 is able to address this issue. The name of the patch is 89c8620157d6e38f9872811620d25138fc9d1b0d. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216852.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.216852 | vdb-entry |
| https://vuldb.com/?ctiid.216852 | signaturepermissions-required |
| https://github.com/markdown-it/markdown-it/commit… | patch |
| https://github.com/markdown-it/markdown-it/releas… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | markdown-it |
Affected:
2.x
|
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CVE-2022-21670 (GCVE-0-2022-21670)
Vulnerability from nvd – Published: 2022-01-10 20:40 – Updated: 2025-04-22 18:33
VLAI
Title
Uncontrolled Resource Consumption in markdown-it
Summary
markdown-it is a Markdown parser. Prior to version 1.3.2, special patterns with length greater than 50 thousand characterss could slow down the parser significantly. Users should upgrade to version 12.3.2 to receive a patch. There are no known workarounds aside from upgrading.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/markdown-it/markdown-it/securi… | x_refsource_CONFIRM |
| https://github.com/markdown-it/markdown-it/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| markdown-it | markdown-it |
Affected:
< 12.3.2
|
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CVE-2015-3295 (GCVE-0-2015-3295)
Vulnerability from nvd – Published: 2017-06-07 21:00 – Updated: 2024-08-06 05:39
VLAI
Summary
markdown-it before 4.1.0 does not block data: URLs.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
3 references
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2015/0… | mailing-listx_refsource_MLIST |
| http://www.securityfocus.com/bid/71824 | vdb-entryx_refsource_BID |
| https://github.com/markdown-it/markdown-it/commit… | x_refsource_CONFIRM |
Date Public
2015-03-30 00:00
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CVE-2026-2327 (GCVE-0-2026-2327)
Vulnerability from cvelistv5 – Published: 2026-02-12 05:00 – Updated: 2026-02-12 14:41
VLAI
Summary
Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Regular Expression Denial of Service (ReDoS)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | markdown-it |
Affected:
13.0.0 , < 14.1.1
(semver)
|
Credits
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CVE-2025-7969 (GCVE-0-2025-7969)
Vulnerability from cvelistv5 – Published: 2025-08-21 16:40 – Updated: 2025-12-03 21:06 Disputed
VLAI
Title
Markdown-it 14.1.0 - Cross-site scripting (XSS)
Summary
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in markdown-it allows Cross-Site Scripting (XSS). This vulnerability is associated with program files lib/renderer.mjs.
This issue affects markdown-it: 14.1.0. NOTE: the Supplier does not consider this issue to be a vulnerability.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://fluidattacks.com/advisories/fito | third-party-advisory |
| https://github.com/markdown-it/markdown-it | product |
| https://github.com/markdown-it/markdown-it/issues/1122 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| markdown-it | markdown-it |
Affected:
14.1.0
(custom)
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CVE-2015-10005 (GCVE-0-2015-10005)
Vulnerability from cvelistv5 – Published: 2022-12-27 08:05 – Updated: 2025-04-11 15:09
VLAI
Title
markdown-it html_re.js redos
Summary
A vulnerability was found in markdown-it up to 2.x. It has been classified as problematic. Affected is an unknown function of the file lib/common/html_re.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 3.0.0 is able to address this issue. The name of the patch is 89c8620157d6e38f9872811620d25138fc9d1b0d. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216852.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.216852 | vdb-entry |
| https://vuldb.com/?ctiid.216852 | signaturepermissions-required |
| https://github.com/markdown-it/markdown-it/commit… | patch |
| https://github.com/markdown-it/markdown-it/releas… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | markdown-it |
Affected:
2.x
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CVE-2022-21670 (GCVE-0-2022-21670)
Vulnerability from cvelistv5 – Published: 2022-01-10 20:40 – Updated: 2025-04-22 18:33
VLAI
Title
Uncontrolled Resource Consumption in markdown-it
Summary
markdown-it is a Markdown parser. Prior to version 1.3.2, special patterns with length greater than 50 thousand characterss could slow down the parser significantly. Users should upgrade to version 12.3.2 to receive a patch. There are no known workarounds aside from upgrading.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/markdown-it/markdown-it/securi… | x_refsource_CONFIRM |
| https://github.com/markdown-it/markdown-it/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| markdown-it | markdown-it |
Affected:
< 12.3.2
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CVE-2015-3295 (GCVE-0-2015-3295)
Vulnerability from cvelistv5 – Published: 2017-06-07 21:00 – Updated: 2024-08-06 05:39
VLAI
Summary
markdown-it before 4.1.0 does not block data: URLs.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
3 references
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2015/0… | mailing-listx_refsource_MLIST |
| http://www.securityfocus.com/bid/71824 | vdb-entryx_refsource_BID |
| https://github.com/markdown-it/markdown-it/commit… | x_refsource_CONFIRM |
Date Public
2015-03-30 00:00
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