XXE in Obdasystems Mastro
CVE-2021-40511
OBDA systems’ Mastro 1.0 is vulnerable to XML Entity Expansion (aka “billion laughs”) attack allowing denial of service.
EPSS: 0.009 (55.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Obdasystems Mastro — versions 1.0
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-40511?
- CVE-2021-40511 is a high-severity vulnerability in Obdasystems Mastro, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2022-06-21.
- How severe is CVE-2021-40511?
- High severity. CVSS v3 base score is 7.5 out of 10.