Unauthenticated denial of service via oversized headers
Published Feb 4, 2026 · Updated Feb 4, 2026
Uncontrolled resource consumption in Water-Melon Melon through commit 9df9292 allows remote attackers to exhaust RAM with HTTP headers. The HTTP component accepts request headers without enforcing a maximum length, allowing attacker-controlled header data to consume unbounded memory. No authentication or user interaction is required, and the documented consequence is service interruption from RAM exhaustion rather than data access or modification.
Summary
What happened
Uncontrolled resource consumption in Water-Melon Melon through commit 9df9292 allows remote attackers to exhaust RAM with HTTP headers. The HTTP component accepts request headers without enforcing a maximum length, allowing attacker-controlled header data to consume unbounded memory. No authentication or user interaction is required, and the documented consequence is service interruption from RAM exhaustion rather than data access or modification.
The record
- CVE
- CVE-2025-71031
- Published
- Feb 4, 2026
- Updated
- Feb 4, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-400, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 4, 2026CVE publishedPublication date reported by the CVE source.
- Feb 4, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- CVE-2025-71031 Denial of Service in Melon C Libraryproof of concept · unverified
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Technologies
Your stack
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Your stack
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