TI-2022-20949 Aliases CVE-2022-42969

The py library through 1.11.0 for Python allows remote attackers to conduct a ReDoS…

HIGH 66CWE-1333Published 2022-10-16 · Updated 2025-05-14

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Deferred Red Hat: fix deferred

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-1333.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.02102 81st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Deferred Red Hat: fix deferred

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:pytest:py::::::::	up to 1.11.0	Vulnerable	pytest

cpe:2.3:a:pytest:py:*:*:*:*:*:*:*:* Versions up to 1.11.0 Vulnerable ·pytest

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat OpenShift Container Platform 4	Affected	No fix yet: Fix deferred
Service Telemetry Framework 1.5	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2022-42969

References

Exploit 1

https://github.com/pytest-dev/py/issues/287

Advisory 1

https://news.ycombinator.com/item?id=34163710

Other 2

TI-2020-17809 A denial of service via regular expression in the py.path.svnwc component of py (aka… CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences