CVE-2026-111759

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Source
https://cve.org/CVERecord?id=CVE-2026-111759
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111759.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-111759
Aliases
Downstream
Published
2026-10-19T17:39:10Z
Modified
2026-10-20T02:44:42Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
markdown-it: Quadratic complexity in smartquotes with unmatched closing quotes
Details

markdown-it is a Markdown parser. Prior to 14.3.2 and 15.0.2, when typographer: true is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input. Many opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed. The default configuration (typographer: false) is not affected, but this option is enabled with high probability. This issue is fixed in versions 14.3.2 and 15.0.2.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-400",
        "CWE-407"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111759.json"
}
References

Affected packages

Git / github.com/markdown-it/markdown-it

Affected ranges

Type
GIT
Repo
https://github.com/markdown-it/markdown-it
Events
Introduced
157b33bc13649aebecf9ab9b3b8c85ae645abb5a
Fixed
3c51991c32aaa2b002a52c009334ebe5752c84b3
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
efb9993124c3eb229eea24dd659c91dcee7f6d60
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "15.0.0"
        },
        {
            "fixed":  "15.0.2"
        },
        {
            "introduced":  "0"
        },
        {
            "fixed":  "14.3.2"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

10.*
10.0.0
11.*
11.0.0
11.0.1
12.*
12.0.0
12.0.1
12.0.2
12.0.3
12.0.4
12.0.5
12.0.6
12.1.0
12.2.0
12.3.0
12.3.1
12.3.2
13.*
13.0.0
13.0.1
13.0.2
14.*
14.0.0
14.1.0
14.1.1
14.2.0
14.3.0
14.3.1
15.*
15.0.0
15.0.1
2.*
2.0.0
2.1.0
2.1.1
2.1.2
2.1.3
2.2.0
2.2.1
3.*
3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.0.6
3.0.7
3.1.0
4.*
4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.2.0
4.2.1
4.2.2
4.3.0
4.3.1
4.4.0
5.*
5.0.0
5.0.1
5.0.2
5.0.3
5.1.0
6.*
6.0.0
6.0.1
6.0.2
6.0.3
6.0.4
6.0.5
6.1.0
6.1.1
7.*
7.0.0
7.0.1
8.*
8.0.0
8.0.1
8.1.0
8.2.0
8.2.1
8.2.2
8.3.0
8.3.1
8.3.2
8.4.0
8.4.1
8.4.2
9.*
9.0.0
9.0.1
9.1.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111759.json"