CVE-2021-40511

HIGH 7.5CVE-2021-40511 · Published 21/06/2022 · updated 17/06/2026

In short

CVE-2021-40511 is a HIGH (CVSS 7.5) vulnerability affecting mastro (obdasystems).
Chance of exploitation in the next 30 days (EPSS): 0.94%, higher than 61.2% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
mastro obdasystems	`= 1.0`	No fix yet

OBDA systems’ Mastro 1.0 is vulnerable to XML Entity Expansion (aka “billion laughs”) attack allowing denial of service.

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