How severe is CVE-2018-1107?

CVE-2018-1107 has a CVSS 3.x base score of 5.3, rated medium 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 low.

Is CVE-2018-1107 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1107?

CVE-2018-1107 affects Is-my-json-valid Project Is-my-json-valid. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1107?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-1107 published?

CVE-2018-1107 was published on 2021-03-30 and last updated on 2026-06-17.

CVE-2018-1107

CVE-2018-1107 is a medium-severity vulnerability in Is-my-json-valid Project Is-my-json-valid with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Is-my-json-valid Project Is-my-json-valid
Published: 2021-03-30
Last modified: 2026-06-17

Description

It was discovered that the is-my-json-valid JavaScript library used an inefficient regular expression to validate JSON fields defined to have email format. A specially crafted JSON file could cause it to consume an excessive amount of CPU time when validated.

Frequently asked questions

What is CVE-2018-1107?: It was discovered that the is-my-json-valid JavaScript library used an inefficient regular expression to validate JSON fields defined to have email format. A specially crafted JSON file could cause it to consume an excessive amount of CPU time when validated.
How severe is CVE-2018-1107?: CVE-2018-1107 has a CVSS 3.x base score of 5.3, rated medium 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 low.
Is CVE-2018-1107 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1107?: CVE-2018-1107 affects Is-my-json-valid Project Is-my-json-valid. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1107?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1107 published?: CVE-2018-1107 was published on 2021-03-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:is-my-json-valid_project:is-my-json-valid:*:*:*:*:*:node.js:*:*

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