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CVE-2019-19588

24
FAUCET Score

CVE-2019-19588 describes a denial-of-service vulnerability affecting Python's validators package versions 0.12.2 through 0.12.5. A crafted domain string, when processed by validators.domain, can trigger an infinite loop, rendering the application unresponsive. This high-severity vulnerability (CVSS 7.5) is network-exploitable with low attack complexity, requiring no user interaction or privileges, and primarily impacts availability. While no active exploitation, public exploit code, or significant community discussion has been observed, the issue was addressed in validators version 0.12.6.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.12.2, <= 0.12.5CPE matchmatch criteria
cpe:2.3:a:validators_project:validators:*:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.47%
Probability of exploitation in next 30 days
EPSS Percentile
71.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0147 is in the 52nd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: validatorsFixed in: 0.12.6

Vendor Advisories (1)

pipGHSA-5qcg-w2cc-xffwhigh

Uncontrolled resource consumption in validators Python package

Jan 21, 2020

References

github.com / kvesteri/validators/issues/86
ExploitThird Party Advisory