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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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2541119d13e05639470224d2333c1e126963ec7828e0943cf4bc5e8d5a6c34f2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","exploitCodeMaturity":"PROOF_OF_CONCEPT","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/cna/metrics/0/cvssV3_1

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"product":"markdown-it","vendor":"n/a","versions":[{"lessThan":"14.1.1","status":"affected","version":"13.0.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","exploitCodeMaturity":"PROOF_OF_CONCEPT","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-1333","description":"Regular Expression Denial of Service (ReDoS)","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"tags":["exploit"],"url":"https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/adp/0/references/1
{"url":"https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/cna/references/1
{"url":"https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs%23L33"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/cna/references/2
{"url":"https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/cna/references/3
{"url":"https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:987e8ad133371ab8620b81e3427f74bfc723be3a22a5602d19b5094361d958e8 · sha256:cdee7344ecebd86c… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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