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.

Published: 2011-12-05 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4356 is rated Low Risk (31.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-4356

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.05% 0.05% -0.00%
2 2025-03-29 0.04% 0.05% +0.01%
3 2023-03-07 — 0.04% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4356

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.9 2.0 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.4 10.0 [email protected]

Weakness enumeration for CVE-2011-4356

GitHub Security Advisory for CVE-2011-4356

GHSA-rpc6-h455-3rx5 · Severity: medium · Ecosystem: pip — Celery local privilege escalation vulnerability

OS Trackers for CVE-2011-4356

vendor priority summary link
debian not yet assigned CVE-2011-4356 not yet assigned priority: Debian including 1 source packages (celery), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-4356

Affected software / configurations for CVE-2011-4356

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

References for CVE-2011-4356

cvelogic Threat Intelligence