CVE-2026-48082Public exploitNetwork attack vector

Booking abuse amplification via weak proof-of-work

Published Aug 6, 2026 · Updated Aug 6, 2026

Insufficient throttling in OpenReception before 1.0.6 allows remote attackers to amplify automated abuse of appointment booking. The bootstrap challenge service hardcodes SHA-256 proof-of-work at four leading hexadecimal zeros and keys its fallback throttle with attacker-controlled tunnel, key, and email values. No authentication is required; fresh bindings evade accumulation, allowing rapid challenge solving and bulk appointment-slot creation.

CVSS severity3.7
Low
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient throttling in OpenReception before 1.0.6 allows remote attackers to amplify automated abuse of appointment booking. The bootstrap challenge service hardcodes SHA-256 proof-of-work at four leading hexadecimal zeros and keys its fallback throttle with attacker-controlled tunnel, key, and email values. No authentication is required; fresh bindings evade accumulation, allowing rapid challenge solving and bulk appointment-slot creation.

The record

CVE
CVE-2026-48082
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
OpenReception
Product
OpenReception
Classifications
CWE-770, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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=< 1.0.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenReception · OpenReceptionversion=< 1.0.6

Published CVSS scores

3.7GitHub Security AdvisoryCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

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 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 exploitPublished

Weakness, pattern, technique

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

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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