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CVE-2022-42969

26
FAUCET Score

CVE-2022-42969 describes a Regular expression Denial of Service (ReDoS) vulnerability in the Python 'py' library, versions through 1.11.0, affecting the handling of Subversion repository info data. With a CVSS score of 7.5 (HIGH), this vulnerability could allow unauthenticated remote attackers to cause a denial of service with low attack complexity. Despite the high severity, there is no evidence of active exploitation, no public exploit code, and minimal community discussion, with some third parties disputing its reproducibility.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.11.0CPE matchmatch criteria
cpe:2.3:a:pytest:py:*:*:*:*:*:*:*:*

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
1.55%
Probability of exploitation in next 30 days
EPSS Percentile
72.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0155 is in the 54th 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 (7)

mediatekpatch availablevia llm_extracted
Fixed in: 9.3.1, 9.2.3, 9.1.6
microsoftpatch availablevia msrc
Product: cm1 python-py 1.10.0-1 on CBL Mariner 1.0Fixed in: 1.10.0-1
microsoftpatch availablevia msrc
Product: cbl2 python-py 1.10.0-3 on CBL Mariner 2.0Fixed in: 1.10.0-3
microsoftpatch availablevia msrc
Product: 18587-16823Fixed in: 1.10.0-3
microsoftpatch availablevia msrc
Product: 18586-16820Fixed in: 1.10.0-1
redhatvendor investigatingvia redhat_api
Product: Service Telemetry Framework 1.5Fixed in: stf/prometheus-webhook-snmp-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: ose-aws-efs-utils-container

Vendor Advisories (4)

mediatekllm-mediatek-5bd731d14163992dHIGH

Third-Party Package Updates in Splunk Enterprise - October 2024

Oct 14, 2024
pipGHSA-w596-4wvx-j9j6high

Withdrawn Advisory: ReDoS in py library when used with subversion

Oct 16, 2022
redhatCVE-2022-42969Low

py: ReDoS in py library when used with subversion

Oct 16, 2022
microsoft2022-Oct/CVE-2022-42969Important

The py library through 1.11.0 for Python allows remote attackers to conduct a ReDoS (Regular expression Denial of Service) attack via a Subversion repository with crafted info data, because the InfoSvnCommand argument is mishandled. Note: This has been disputed by multiple third parties as not being reproduceable and they argue this is not a valid vulnerability.

Oct 11, 2022

References

github.com / pytest-dev/py/blob/cb87a83960523a2367d0f19226a73aed4ce4291d/py/_path/svnurl.py
Product
github.com / pytest-dev/py/issues/287
ExploitIssue TrackingThird Party Advisory
news.ycombinator.com / item
Issue TrackingThird Party Advisory
pypi.org / project/py
Product