Vulnerability library
Security checkApril 29, 2026

Marked Vulnerable to OOM Denial of Service via Infinite Recursion in marked Tokenizer

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High severitynpmmarked

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Description

A critical Denial of Service (DoS) vulnerability exists in [email protected]. 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.

Recommendation

Update the marked package to the latest compatible version. Followings are version details:

  • Affected version(s): >= 18.0.0, <= 18.0.1
  • Patched version(s): 18.0.2

References

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Related Issues

See something that needs correcting? Let us knowUpdated April 29, 2026