CVE-2026-0716 Red Hat CVE debrief

Who should care

Defenders responsible for applications using libsoup's WebSocket support should assess their exposure and verify the configuration of the library. This includes verifying the maximum incoming payload size setting and ensuring that it is properly configured to prevent potential security risks. Additionally, defenders should prioritize verifying the configuration of libsoup's WebSocket support and ensuring that the maximum incoming payload size is properly

Why it matters

A flaw in libsoup's WebSocket frame processing can cause memory exposure or a crash when handling incoming messages with a non-default configuration. Defenders should prioritize verifying the configuration of libsoup's WebSocket support and ensuring that the maximum incoming payload size is properly set.

• Potential memory exposure or crash in applications using libsoup's WebSocket support
• Need to verify configuration of libsoup's WebSocket support
• Possible impact on application stability and security

Technical summary

The libsoup library has a flaw in its WebSocket frame processing when handling incoming messages. If a non-default configuration is used where the maximum incoming payload size is unset, the library may read memory outside the intended bounds, potentially causing memory exposure or a crash. This issue is critical for applications using libsoup's WebSocket support with this configuration, as it can lead to security risks and application instability. Defenders should prioritize verifying the configuration of libsoup's WebSocket support and ensuring that the maximum incoming payload size is properly set.

Defensive priority

Defenders should prioritize verifying the configuration of libsoup's WebSocket support and ensuring that the maximum incoming payload size is properly set.

Recommended defensive actions

• Verify the configuration of libsoup's WebSocket support
• Ensure that the maximum incoming payload size is properly set
• Monitor for potential crashes or memory exposure
• 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 CVE record and NVD entry provide details on the vulnerability, but the scope of affected applications and versions requires further verification. The libsoup library's WebSocket support is impacted, and defenders should verify the configuration of the library, especially the maximum incoming payload size setting. Additional verification is needed to determine the full scope of affected applications and 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.