CVE-2026-21720 Detail
Received
This CVE record has recently been published to the CVE List and has been included within the NVD dataset. DescriptionEvery uncached /avatar/:hash request spawns a goroutine that refreshes the Gravatar image. If the refresh sits in the 10-slot worker queue longer than three seconds, the handler times out and stops listening for the result, so that goroutine blocks forever trying to send on an unbuffered channel. Sustained traffic with random hashes keeps tripping this timeout, so goroutine count grows linearly, eventually exhausting memory and causing Grafana to crash on some systems. Metrics
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CVSS 4.0 Severity and Vector Strings:
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Weakness Enumeration
Quick InfoCVE Dictionary Entry:CVE-2026-21720 NVD Published Date: 01/27/2026 NVD Last Modified: 01/27/2026 Source: Grafana Labs |
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