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CVE-2026-21720

Опубликовано: 27 янв. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 7.5

Описание

Every 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.

РелизСтатусПримечание
devel

DNE

esm-apps/xenial

needs-triage

jammy

DNE

noble

DNE

questing

DNE

upstream

needs-triage

Показывать по

EPSS

Процентиль: 16%
0.00052
Низкий

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 7.5
nvd
12 дней назад

Every 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.

CVSS3: 7.5
debian
12 дней назад

Every uncached /avatar/:hash request spawns a goroutine that refreshes ...

CVSS3: 7.5
github
12 дней назад

Every 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.

EPSS

Процентиль: 16%
0.00052
Низкий

7.5 High

CVSS3