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CVE-2022-42966

Exponential ReDoS in cleo leads to denial of service

HIGH
7.5
CVSS Score
Published: November 9, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 05:05 AM UTC
2 products affected across 2 vendorsCleoPoetry Cleo

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Severity
HIGH7.5
Exploit prediction
EPSS 1.0%
SSVC
PoC

Description

An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the cleo PyPI package, when an attacker is able to supply arbitrary input to the Table.set_rows method

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cleo· Python Poetrypypi
95%
v < 2.0.0
Affected range stops below 2.0.0, so it looks safe — our inference, not a vendor statement
Poetry Cleo· Cleopypi
60%
v < 1.0.0
Affected range stops below 1.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitThird Party Advisory
Source: [email protected]
https://research.jfrog.com/vulnerabilities/cleo-redos-xray-257186/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-1333

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