How severe is CVE-2011-4356?

CVE-2011-4356 has a CVSS 2.0 base score of 6.9, rated medium severity.

Is CVE-2011-4356 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4356?

CVE-2011-4356 primarily affects Celeryproject Celery. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-4356?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-4356 published?

CVE-2011-4356 was published on 2011-12-05 and last updated on 2026-06-16.

CVE-2011-4356

CVE-2011-4356 is a medium-severity vulnerability in Celeryproject Celery with a CVSS 2.0 base score of 6.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 6.9)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Celeryproject Celery
Published: 2011-12-05
Last modified: 2026-06-16

Description

Celery 2.1 and 2.2 before 2.2.8, 2.3 before 2.3.4, and 2.4 before 2.4.4 changes the effective id but not the real id during processing of the --uid and --gid arguments to celerybeat, celeryd_detach, celeryd-multi, and celeryev, which allows local users to gain privileges via vectors involving crafted code that is executed by the worker process.

Frequently asked questions

What is CVE-2011-4356?: Celery 2.1 and 2.2 before 2.2.8, 2.3 before 2.3.4, and 2.4 before 2.4.4 changes the effective id but not the real id during processing of the --uid and --gid arguments to celerybeat, celeryd_detach, celeryd-multi, and celeryev, which allows local users to gain privileges via vectors involving crafted code that is executed by the worker process.
How severe is CVE-2011-4356?: CVE-2011-4356 has a CVSS 2.0 base score of 6.9, rated medium severity.
Is CVE-2011-4356 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4356?: CVE-2011-4356 primarily affects Celeryproject Celery. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4356?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4356 published?: CVE-2011-4356 was published on 2011-12-05 and last updated on 2026-06-16.

References

Affected products (17)

cpe:2.3:a:celeryproject:celery:2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.2.4:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.2.5:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.2.6:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.2.7:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.3.1:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.3.2:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.3.3:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.4.2:*:*:*:*:*:*:*
cpe:2.3:a:celeryproject:celery:2.4.3:*:*:*:*:*:*:*

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