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CVE-2022-21195

24
FAUCET Score

CVE-2022-21195 describes a Regular Expression Denial of Service (ReDoS) vulnerability affecting all versions of the url-regex package. This flaw allows an attacker to craft a malicious input that causes excessive CPU usage, leading to a denial of service. Rated with a CVSS score of 7.5 (High), the vulnerability is network-exploitable with low attack complexity and no user interaction required, resulting in a high impact on availability. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:url-regex_project:url-regex:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.30%
Probability of exploitation in next 30 days
EPSS Percentile
67.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0130 is in the 47th percentile among its peer group of 51,506 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

Vendor Advisories (1)

pipGHSA-hg3w-7hj9-m3f7medium

Regular expression denial of service in url_regex

May 21, 2022

References

github.com / AlexFlipnote/url_regex/blob/master/url_regex/url_regex.py
ExploitThird Party Advisory
snyk.io / vuln/SNYK-PYTHON-URLREGEX-2347643
ExploitThird Party Advisory