CVE-2026-48082: CWE-770: Allocation of Resources Without Limits or Throttling in open-reception appointment-booking-software
OpenReception's appointment booking software prior to version 1.0.6 uses a weak proof-of-work (PoW) challenge as a rate-limiter for unauthenticated clients. The PoW difficulty is set to 16 bits, which modern hardware can solve in under 200 milliseconds, making it ineffective against automated abuse. Additionally, the server-side throttle mechanism can be bypassed by attackers supplying attacker-controlled values, allowing repeated attempts without effective rate-limiting. Version 1.0.6 addresses this issue.
AI Analysis
Technical Summary
The vulnerability (CVE-2026-48082) in OpenReception's appointment booking software involves allocation of resources without effective limits or throttling (CWE-770). The bootstrap challenge endpoint issues a SHA-256 proof-of-work with a difficulty of 4 hex zeros (16 bits), which is insufficient to prevent automated abuse as it can be solved very quickly by modern hardware. The server also attempts to throttle requests based on a binding that includes attacker-controlled parameters, enabling attackers to bypass the throttle by changing these values. This results in ineffective rate-limiting and potential resource exhaustion. The issue is fixed in version 1.0.6.
Potential Impact
The ineffective proof-of-work and bypassable throttle mechanism allow attackers to automate appointment booking requests at a high rate, potentially leading to resource exhaustion or denial of service conditions. The CVSS score of 3.7 (low) reflects limited impact, with no confidentiality, integrity, or significant availability impact reported.
Mitigation Recommendations
Upgrade to OpenReception appointment booking software version 1.0.6 or later, where this issue is fixed. Patch status is not explicitly confirmed in the advisory, but the description states version 1.0.6 fixes the issue. Until upgrade, no effective server-side throttling exists for unauthenticated clients, so additional external rate-limiting or monitoring may be considered as a temporary measure.
CVE-2026-48082: CWE-770: Allocation of Resources Without Limits or Throttling in open-reception appointment-booking-software
Description
OpenReception's appointment booking software prior to version 1.0.6 uses a weak proof-of-work (PoW) challenge as a rate-limiter for unauthenticated clients. The PoW difficulty is set to 16 bits, which modern hardware can solve in under 200 milliseconds, making it ineffective against automated abuse. Additionally, the server-side throttle mechanism can be bypassed by attackers supplying attacker-controlled values, allowing repeated attempts without effective rate-limiting. Version 1.0.6 addresses this issue.
CVSS v3.1
Score 3.7low
Affected software
pkg:github/open-reception/appointment-booking-softwareRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability (CVE-2026-48082) in OpenReception's appointment booking software involves allocation of resources without effective limits or throttling (CWE-770). The bootstrap challenge endpoint issues a SHA-256 proof-of-work with a difficulty of 4 hex zeros (16 bits), which is insufficient to prevent automated abuse as it can be solved very quickly by modern hardware. The server also attempts to throttle requests based on a binding that includes attacker-controlled parameters, enabling attackers to bypass the throttle by changing these values. This results in ineffective rate-limiting and potential resource exhaustion. The issue is fixed in version 1.0.6.
Potential Impact
The ineffective proof-of-work and bypassable throttle mechanism allow attackers to automate appointment booking requests at a high rate, potentially leading to resource exhaustion or denial of service conditions. The CVSS score of 3.7 (low) reflects limited impact, with no confidentiality, integrity, or significant availability impact reported.
Mitigation Recommendations
Upgrade to OpenReception appointment booking software version 1.0.6 or later, where this issue is fixed. Patch status is not explicitly confirmed in the advisory, but the description states version 1.0.6 fixes the issue. Until upgrade, no effective server-side throttling exists for unauthenticated clients, so additional external rate-limiting or monitoring may be considered as a temporary measure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-20T18:40:45.831Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a750704bf8831d5395f5a70
Added to database: 08/06/2026, 22:13:24 UTC
Last enriched: 08/06/2026, 22:59:04 UTC
Last updated: 08/06/2026, 23:41:03 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.