CVE-2026-5233: Pizzy Library DoS Flooding Vulnerability

CVE-2026-5233 Overview

CVE-2026-5233 is an Improper Control of Interaction Frequency vulnerability [CWE-799] affecting MIA Technology Inc. Pizzy Library. The flaw allows an authenticated network attacker to flood the application with requests, exhausting resources and degrading availability. Affected versions range from 1.0.0.26250 up to but not including 1.3.9.26250.

The issue was published to the National Vulnerability Database (NVD) on 2026-06-15 and last modified on 2026-06-17. A Turkish national cybersecurity advisory tracks this issue as TR-26-0383.

Critical Impact
Authenticated attackers can send unbounded requests over the network to trigger resource exhaustion, producing a high-impact denial of service against Pizzy Library deployments.

Affected Products

MIA Technology Inc. Pizzy Library version 1.0.0.26250
MIA Technology Inc. Pizzy Library versions between 1.0.0.26250 and 1.3.9.26250
Fixed in MIA Technology Inc. Pizzy Library version 1.3.9.26250

Discovery Timeline

2026-06-15 - CVE-2026-5233 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2026-5233

Vulnerability Analysis

The vulnerability stems from missing rate limiting on interactions exposed by Pizzy Library. The library does not throttle, queue, or otherwise restrict the frequency of inbound requests from an authenticated principal. An attacker holding low-privilege credentials can therefore generate request volume well beyond legitimate operational thresholds.

Resource exhaustion attacks against such interfaces typically consume CPU cycles, memory, connection pools, or downstream service quotas. Once these resources saturate, the host application stops servicing legitimate users, producing a denial of service. Because the attack vector is network-based and requires no user interaction, exploitation can be fully automated.

The weakness is classified under [CWE-799] (Improper Control of Interaction Frequency). This class of issue often appears when developers rely on upstream gateways for throttling rather than enforcing limits inside the library itself.

Root Cause

The root cause is the absence of frequency controls on interactions handled by Pizzy Library. The library accepts and processes requests at whatever rate the caller submits them. No per-session, per-account, or per-source token bucket is applied prior to invoking downstream logic.

Attack Vector

An attacker authenticates with low-privilege credentials and issues a high-volume stream of requests to the affected library endpoints. The attacker can use a single host or distribute the flood across multiple sessions. Successful exploitation results in availability loss for the host application and any tenants sharing its resources.

No verified proof-of-concept code is publicly available. Refer to the Siber Güvenlik Notification TR-26-0383 for vendor-coordinated technical details.

Detection Methods for CVE-2026-5233

Indicators of Compromise

Sustained spikes in request rate from a single authenticated account or session token against Pizzy Library endpoints.
Abnormal CPU, memory, or connection pool saturation on hosts running Pizzy Library versions in the affected range.
Application logs showing repeated identical or near-identical requests within short time windows from the same principal.

Detection Strategies

Baseline normal request-per-second values for each authenticated client and alert on deviations exceeding the baseline.
Correlate authentication events with downstream request volume to identify accounts generating disproportionate traffic.
Inspect reverse proxy and application server access logs for bursts that align with availability degradation events.

Monitoring Recommendations

Forward Pizzy Library application logs and host telemetry to a centralized analytics platform for rate-based analysis.
Track HTTP 429, 503, and timeout response codes as leading indicators of resource exhaustion.
Monitor account-level request budgets and trigger alerts when a single principal exceeds defined thresholds.

How to Mitigate CVE-2026-5233

Immediate Actions Required

Upgrade Pizzy Library to version 1.3.9.26250 or later across all environments.
Inventory all applications embedding Pizzy Library and confirm the deployed version against the affected range.
Rotate or restrict credentials for any account that has shown anomalous request patterns against the library.

Patch Information

MIA Technology Inc. addresses CVE-2026-5233 in Pizzy Library 1.3.9.26250. Apply the upgrade following the guidance in the Siber Güvenlik Notification TR-26-0383. Validate that all dependent applications reference the patched version after deployment.

Workarounds

Enforce rate limiting at an upstream reverse proxy or API gateway to cap requests per authenticated principal and per source IP.
Apply web application firewall rules that detect and block burst traffic patterns against Pizzy Library endpoints.
Reduce the privilege and scope of service accounts that interact with the library to limit the blast radius of credential abuse.

bash

# Configuration example
# See the vendor advisory for authoritative remediation guidance:
# https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0383