CVE-2026-104057 akhilrex CVE debrief

Who should care

Operators and administrators of Podgrab instances should assess their exposure and prioritize patching or mitigating this vulnerability to prevent potential DoS attacks. This requires reviewing the current deployment, identifying potential vulnerabilities, and implementing necessary patches or mitigations. Additionally, security teams and vulnerability management teams should be aware of this vulnerability and its potential impact on their systems.

Why it matters

CVE-2026-104057 is a high-severity vulnerability in Podgrab that allows unauthenticated denial-of-service (DoS) attacks via concurrent map access in its WebSocket handler. Operators and administrators should prioritize patching or mitigating this vulnerability to prevent potential DoS attacks.

• Denial of service requires operator intervention to restore service
• Potential for service disruption or downtime
• Need for patching or mitigation to prevent exploitation

Technical summary

The vulnerability is caused by unsynchronized concurrent access to shared maps (activePlayers and allConnections) in the WebSocket handler of Podgrab. A remote attacker can open multiple WebSocket connections to the /ws endpoint and send messages in a loop to trigger a Go runtime data race that crashes the process, causing a denial of service. This vulnerability affects operators and administrators of Podgrab instances, who should assess their exposure and prioritize patching or mitigating this vulnerability to prevent potential DoS attacks.

Defensive priority

Operators and administrators should prioritize patching or mitigating this vulnerability to prevent potential DoS attacks.

Recommended defensive actions

• Patch or update Podgrab to a version that fixes the vulnerability
• Implement rate limiting or IP blocking to mitigate potential DoS attacks
• Monitor Podgrab instances for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability is described in the CVE Program record and the NVD vulnerability detail page. The source item provides additional information about the vulnerability, including a technical description and affected versions.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.