CVE-2022-1930Public exploitNetwork attack vector

Service hang via exponential type-regex backtracking

Published Aug 22, 2022 · Updated Aug 3, 2024

Regular expression denial of service in ApeWorX eth-account before 0.5.9 allows remote attackers to hang calling services. TYPE_REGEX in validation.py nests a quantified digit pattern beneath a repeatable array suffix, causing exponential backtracking on malformed EIP-712 type strings. Exploitation requires attacker-controlled structured data passed to encode_structured_data; CPU exhaustion can stall the integrating process without reading or altering data.

CVSS severity5.9
Medium
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Regular expression denial of service in ApeWorX eth-account before 0.5.9 allows remote attackers to hang calling services. TYPE_REGEX in validation.py nests a quantified digit pattern beneath a repeatable array suffix, causing exponential backtracking on malformed EIP-712 type strings. Exploitation requires attacker-controlled structured data passed to encode_structured_data; CPU exhaustion can stall the integrating process without reading or altering data.

The record

CVE
CVE-2022-1930
Published
Aug 22, 2022
Updated
Aug 3, 2024
Vendor
ApeWorX
Product
eth-account
Classifications
CWE-697, CWE-1333, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <0.5.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ApeWorX · eth-accountversion=0 <0.5.9

Published CVSS scores

5.9GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-697Incorrect Comparison
CWE-1333Inefficient Regular Expression Complexity
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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