CVE Explorer
CVE-2026-48988
markdown-it is a Markdown parser. Versions 14.1.1 and below contain a denial-of-service vulnerability when typographer: true is enabled, due to quadratic (O(n^2)) processing in the smartquotes rule. The issue stems from repeatedly modifying strings with replaceAt(), which performs O(n) slicing and concatenation per quote character. This can cause excessive CPU consumption when parsing quote-heavy, user-supplied markdown and may let attackers degrade or disrupt service availability. Although typo
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"markdown-it","vendor":"markdown-it","versions":[{"status":"affected","version":"< 14.2.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:6ddd64fe7b76a7ad663c134cba27ea1574d6aea173ca583daa95929742f0c903 · sha256:6cf38f2cd7f25177… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","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","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:6ddd64fe7b76a7ad663c134cba27ea1574d6aea173ca583daa95929742f0c903 · sha256:6cf38f2cd7f25177… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:6ddd64fe7b76a7ad663c134cba27ea1574d6aea173ca583daa95929742f0c903 · sha256:6cf38f2cd7f25177… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/markdown-it/markdown-it/commit/9ce2087562c45d1e5ddd9f76b990f4b3fbe040e5","tags":["x_refsource_MISC"],"url":"https://github.com/markdown-it/markdown-it/commit/9ce2087562c45d1e5ddd9f76b990f4b3fbe040e5"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:6ddd64fe7b76a7ad663c134cba27ea1574d6aea173ca583daa95929742f0c903 · sha256:6cf38f2cd7f25177… · /containers/cna/references/1
{"name":"https://github.com/markdown-it/markdown-it/security/advisories/GHSA-6v5v-wf23-fmfq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/markdown-it/markdown-it/security/advisories/GHSA-6v5v-wf23-fmfq"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:6ddd64fe7b76a7ad663c134cba27ea1574d6aea173ca583daa95929742f0c903 · sha256:6cf38f2cd7f25177… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/markdown-it/markdown-it/security/advisories/GHSA-6v5v-wf23-fmfq"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:6ddd64fe7b76a7ad663c134cba27ea1574d6aea173ca583daa95929742f0c903 · sha256:6cf38f2cd7f25177… · /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.