CVE-2026-41080: CWE-331 Insufficient Entropy in libexpat project libexpat
libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.
AI Analysis
Technical Summary
The libexpat XML parsing library prior to version 2.8.0 suffers from insufficient entropy in its hashing mechanism, classified as CWE-331. This weakness allows an attacker to craft XML documents that trigger hash flooding, potentially degrading service availability. The CVSS 3.1 base score is 2.9, reflecting low impact with local attack vector, high attack complexity, no privileges required, and no user interaction needed. There is no vendor advisory or patch information available at this time.
Potential Impact
The vulnerability can lead to denial of service conditions due to hash flooding attacks when processing malicious XML input. Confidentiality and integrity are not affected. The low CVSS score indicates limited impact and exploitation difficulty.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider mitigating exposure by restricting untrusted XML input or applying application-level protections against hash flooding.
CVE-2026-41080: CWE-331 Insufficient Entropy in libexpat project libexpat
Description
libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.
CVSS v3.1
Score 2.9low
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libexpat XML parsing library prior to version 2.8.0 suffers from insufficient entropy in its hashing mechanism, classified as CWE-331. This weakness allows an attacker to craft XML documents that trigger hash flooding, potentially degrading service availability. The CVSS 3.1 base score is 2.9, reflecting low impact with local attack vector, high attack complexity, no privileges required, and no user interaction needed. There is no vendor advisory or patch information available at this time.
Potential Impact
The vulnerability can lead to denial of service conditions due to hash flooding attacks when processing malicious XML input. Confidentiality and integrity are not affected. The low CVSS score indicates limited impact and exploitation difficulty.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider mitigating exposure by restricting untrusted XML input or applying application-level protections against hash flooding.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-16T16:52:00.655Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Epss Score
- 0.0003
- Epss Percentile
- 0.08646
- Epss Date
- 2026-04-26
- Gcve Source
- db.gcve.eu
Threat ID: 69e1160082d89c981fa7a67f
Added to database: 4/16/2026, 5:01:52 PM
Last enriched: 5/19/2026, 8:59:23 AM
Last updated: 6/1/2026, 1:39:48 AM
Views: 90
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