How severe is CVE-2018-13863?

CVE-2018-13863 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-13863 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-13863?

CVE-2018-13863 affects Mongodb Js-bson. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-13863?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-13863 published?

CVE-2018-13863 was published on 2018-07-10 and last updated on 2026-06-17.

CVE-2018-13863

CVE-2018-13863 is a high-severity vulnerability in Mongodb Js-bson with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mongodb Js-bson
Published: 2018-07-10
Last modified: 2026-06-17

Description

The MongoDB bson JavaScript module (also known as js-bson) versions 0.5.0 to 1.0.x before 1.0.5 is vulnerable to a Regular Expression Denial of Service (ReDoS) in lib/bson/decimal128.js. The flaw is triggered when the Decimal128.fromString() function is called to parse a long untrusted string.

Frequently asked questions

What is CVE-2018-13863?: The MongoDB bson JavaScript module (also known as js-bson) versions 0.5.0 to 1.0.x before 1.0.5 is vulnerable to a Regular Expression Denial of Service (ReDoS) in lib/bson/decimal128.js. The flaw is triggered when the Decimal128.fromString() function is called to parse a long untrusted string.
How severe is CVE-2018-13863?: CVE-2018-13863 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-13863 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-13863?: CVE-2018-13863 affects Mongodb Js-bson. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-13863?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-13863 published?: CVE-2018-13863 was published on 2018-07-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mongodb:js-bson:*:*:*:*:*:*:*:*

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