CVE-2026-2327

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.

Database specific

{
    "cna_assigner": "snyk",
    "cwe_ids": [
        "CWE-1333"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2327.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

6ec0b76ebe439f5858ae51d8e0cb45ee4a7ad46c

Fixed

b4a9b659ef5734223731cfaa3ad5eacc6fc22918

Fixed

4b4bbcae5e0990a5b172378e507b33a59012ed26

Database specific

Show details

{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:markdown-it_project:markdown-it:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "13.0.0"
                },
                {
                    "fixed": "14.1.1"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "4b4bbcae5e0990a5b172378e507b33a59012ed26"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

13.*

13.0.0

13.0.1

13.0.2

14.*

14.0.0

14.1.0

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-2327.json"