How severe is CVE-2019-19588?

CVE-2019-19588 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-2019-19588 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-19588?

CVE-2019-19588 affects Validators Project Validators. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-19588?

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-2019-19588 published?

CVE-2019-19588 was published on 2019-12-05 and last updated on 2026-06-17.

CVE-2019-19588

CVE-2019-19588 is a high-severity vulnerability in Validators Project Validators 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. The underlying weakness is classified as CWE-835.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-835
Affected product: Validators Project Validators
Published: 2019-12-05
Last modified: 2026-06-17

Description

The validators package 0.12.2 through 0.12.5 for Python enters an infinite loop when validators.domain is called with a crafted domain string. This is fixed in 0.12.6.

Frequently asked questions

What is CVE-2019-19588?: The validators package 0.12.2 through 0.12.5 for Python enters an infinite loop when validators.domain is called with a crafted domain string. This is fixed in 0.12.6.
How severe is CVE-2019-19588?: CVE-2019-19588 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-2019-19588 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-19588?: CVE-2019-19588 affects Validators Project Validators. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-19588?: 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-2019-19588 published?: CVE-2019-19588 was published on 2019-12-05 and last updated on 2026-06-17.

References

https://github.com/kvesteri/validators/issues/86

Affected products (1)

cpe:2.3:a:validators_project:validators:*:*:*:*:*:python:*:*

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