THREATPORT/VULNERABILITY/CVE-2021-23727
HIGH SEVERITY

CVE-2021-23727

Celery vulnerability

CVSS
7.5
EPSS
3.9%
EPSS pct
89th
Exploited
No known
This affects the package celery before 5.2.2. It by default trusts the messages and metadata stored in backends (result stores). When reading task metadata from the backend, the data is deserialized. Given that an attacker can gain access to, or somehow manipulate the metadata within a celery backend, they could trigger a stored command injection vulnerability and potentially gain further access to the system.
Affected vendor
Celeryproject
Affected product
Celery
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2021-12-29

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.9% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2021-23727

  • Confirm whether Celeryproject Celery is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-23727.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-23727

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