What is CVE-2015-4411?

CVE-2015-4411 is a high-severity vulnerability in MongoDB Bson, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2020-02-20.

How severe is CVE-2015-4411?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2015-4411 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in MongoDB Bson

CVE-2015-4411

The Moped::BSON::ObjecId.legal? method in mongodb/bson-ruby before 3.0.4 as used in rubygem-moped allows remote attackers to cause a denial of service (worker resource consumption) via a crafted string. NOTE: This issue is due to an incomplete fix to CVE-2015-4410.

Vulnerability class: DoS (Denial of Service)

Published 2020-02-20 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.064 (93.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.064 · newest: 0.064 · change: 0.000

Affected products

MongoDB Bson
Fedoraproject Fedora — versions 21, 22

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

sakurity.com/blog/2015/06/04/mongo_ruby_regexp.html (Exploit, Third Party Advisory)
homakov.blogspot.ru/2012/05/saferweb-injects-in-various-ruby.html (Exploit, Third Party Advisory)
lists.fedoraproject.org/pipermail/package-announce/2015-July/161987.html (Mailing List, Third Party Advisory)
lists.fedoraproject.org/pipermail/package-announce/2015-July/161964.html (Mailing List, Third Party Advisory)
www.openwall.com/lists/oss-security/2015/06/06/3 (Mailing List, Third Party Advisory)
www.securityfocus.com/bid/75045 (VDB Entry, Third Party Advisory)
github.com/mongoid/moped/commit/dd5a7c14b5d2e466f7875d079af71ad19774609b (Patch)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
github.com/mongodb/bson-ruby/commit/fef6f75413511d653c76bf924a932374a183a24f (Patch)
github.com/mongodb/bson-ruby/compare/7446d7c6764dfda8dc4480ce16d5c023e74be5ca… (Patch)

Frequently asked questions

What is CVE-2015-4411?: CVE-2015-4411 is a high-severity vulnerability in MongoDB Bson, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2020-02-20.
How severe is CVE-2015-4411?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2015-4411 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.