No exploitation reportedFix available

CVE-2015-4412

Q: Is CVE-2015-4412 actively exploited?

Active exploitation of CVE-2015-4412 has not been confirmed. Its EPSS score was 4.7% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2015-4412?

CVE-2015-4412 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2018-02-05
Fixed in3.0.4 · 1.12.3
WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

BSON injection vulnerability in the legal? function in BSON (bson-ruby) gem before 3.0.4 for Ruby allows remote attackers to cause a denial of service (resource consumption) or inject arbitrary data via a crafted string.

Timeline

dates in UTC

2018-02-0516:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2015-4412?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2015-4412?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD

bson

Branch	Affected	Fixed in	Source
3.0	≥ 2.0, < 3.0.4	3.0.4	OSV
1.12	< 1.12.3	1.12.3	OSV

Bson project bson

Branch	Affected	Fixed in	Source
3.0	= 3.0.3	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update bson to 3.0.4 · 1.12.3

Advisories and patches

github.comPatch
sakurity.comPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.09.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
NVDweakness (CWE)CWE-400read 2026-10-23
FIRST EPSSEPSS score4.7 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2018-02-05
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2015-4412?

Is CVE-2015-4412 actively exploited?

Active exploitation of CVE-2015-4412 has not been confirmed. Its EPSS score was 4.7% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2015-4412?

CVE-2015-4412 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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