CVE-2026-72888Network attack vector

Pre-authentication memory exhaustion via failed-load caching

Published Aug 16, 2026 · Updated Aug 16, 2026

Resource exhaustion in Net-OAuth before 0.32 allows remote attackers to crash persistent Perl workers via crafted OAuth requests. Net::OAuth::smart_require caches every attacker-chosen signature-method class name in the process-global %ALREADY_REQUIRED hash, including failed loads, without a bound or eviction. No credentials or valid signature are required because verify resolves the class first; repeated unique names retain memory until the worker is OOM-killed.

CVSS severityUnavailable
Unscored
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Net-OAuth before 0.32 allows remote attackers to crash persistent Perl workers via crafted OAuth requests. Net::OAuth::smart_require caches every attacker-chosen signature-method class name in the process-global %ALREADY_REQUIRED hash, including failed loads, without a bound or eviction. No credentials or valid signature are required because verify resolves the class first; repeated unique names retain memory until the worker is OOM-killed.

The record

CVE
CVE-2026-72888
Published
Aug 16, 2026
Updated
Aug 16, 2026
Vendor
Robert Rothenberg
Product
Net-OAuth
Classifications
CWE-770, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 2026Record 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 <0.32

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Robert Rothenberg · Net-OAuthversion=0 <0.32

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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