MongoDB bundles PCRE version 8.30 that, among other issues, is vulnerable to CVE-2014-8964. A remote, authenticated attacker could use a specially crafted regular expression to crash a mongod server. Upstream issue (with links to patches): https://jira.mongodb.org/browse/SERVER-17252 Statement: This issue did not affect the versions of MongoDB as shipped in any Red Hat product as they use the PCRE system library, not the bundled copy shipped with MongoDB. The CVE-2014-8964 PCRE flaw does not affect Red Hat Enterprise Linux 5 and 6, and has been fixed in Red Hat Enterprise Linux 7 via RHSA-2015:0330.
Vulnerabilities were in PCRE. Moving CVEs to the corresponding PCRE bugs.