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CVE-2026-41680

Marked is a markdown parser and compiler. From 18.0.0 to 18.0.1, a critical Denial of Service (DoS) vulnerability exists in marked. By providing a specific 3-byte input sequence a tab, a vertical tab, and a newline (\x09\x0b\n)—an unauthenticated attacker can trigger an infinite recursion loop during parsing. This leads to unbounded memory allocation, causing the host Node.js application to crash via Memory Exhaustion (OOM). This vulnerability is fixed in 18.0.2.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:658997dc5335ee51be90612a0594027b10b493c4fd8d40280861b82f75330399
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-835","description":"CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b48ef3bcd8712d2c9c513d7072200aca63dbc118ce082c94200b83152569434 · sha256:29e5c741e20a0692… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b48ef3bcd8712d2c9c513d7072200aca63dbc118ce082c94200b83152569434 · sha256:29e5c741e20a0692… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-674","description":"CWE-674: Uncontrolled Recursion","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b48ef3bcd8712d2c9c513d7072200aca63dbc118ce082c94200b83152569434 · sha256:29e5c741e20a0692… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"marked","vendor":"markedjs","versions":[{"status":"affected","version":">= 18.0.0, < 18.0.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6b48ef3bcd8712d2c9c513d7072200aca63dbc118ce082c94200b83152569434 · sha256:29e5c741e20a0692… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","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:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6b48ef3bcd8712d2c9c513d7072200aca63dbc118ce082c94200b83152569434 · sha256:29e5c741e20a0692… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

3 source assertions
{"cweId":"CWE-835","description":"CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b48ef3bcd8712d2c9c513d7072200aca63dbc118ce082c94200b83152569434 · sha256:29e5c741e20a0692… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b48ef3bcd8712d2c9c513d7072200aca63dbc118ce082c94200b83152569434 · sha256:29e5c741e20a0692… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-674","description":"CWE-674: Uncontrolled Recursion","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b48ef3bcd8712d2c9c513d7072200aca63dbc118ce082c94200b83152569434 · sha256:29e5c741e20a0692… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/markedjs/marked/security/advisories/GHSA-6v9c-7cg6-27q7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6b48ef3bcd8712d2c9c513d7072200aca63dbc118ce082c94200b83152569434 · sha256:29e5c741e20a0692… · /containers/adp/0/references/0
{"name":"https://github.com/markedjs/marked/security/advisories/GHSA-6v9c-7cg6-27q7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/markedjs/marked/security/advisories/GHSA-6v9c-7cg6-27q7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6b48ef3bcd8712d2c9c513d7072200aca63dbc118ce082c94200b83152569434 · sha256:29e5c741e20a0692… · /containers/cna/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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