CVE-2021-22177

MEDIUMNVD 4.34.3—

4.3

Potential DoS was identified in gitlab-shell in GitLab CE/EE version 12.6.0 or above, which allows an attacker to spike the server resource utilization via gitlab-shell command.

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 37.2%
KEV: Not listed

Published

April 1, 2021

Last Modified

November 21, 2024

References (6)

cve@gitlabhttps://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22177.json
cve@gitlabhttps://gitlab.com/gitlab-org/gitlab/-/issues/238988
cve@gitlabhttps://hackerone.com/reports/953444
af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22177.json
af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/gitlab-org/gitlab/-/issues/238988
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/953444

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-400Uncontrolled Resource Consumption (Denial of Service)

Data Freshness Timeline

(refreshed 10× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:10 UTCepss_batch
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2026-06-01 13:50 UTCepss_batch
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2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 18:56 UTCEG score recompute
2026-05-26 18:56 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
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2026-05-26 07:17 UTCepss_batch
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2026-05-24 16:49 UTCepss_batch

Frequently asked(5)

What is CVE-2021-22177?

CVE-2021-22177 is a medium vulnerability published on April 1, 2021. Potential DoS was identified in gitlab-shell in GitLab CE/EE version 12.6.0 or above, which allows an attacker to spike the server resource utilization via gitlab-shell command.

When was CVE-2021-22177 disclosed?

CVE-2021-22177 was first published in the National Vulnerability Database on April 1, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-22177 actively exploited?

CVE-2021-22177 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-22177?

CVE-2021-22177 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2021-22177?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-22177, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-22177

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-22177?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (6)

Frequently asked(5)

Related CVEs(same CWE)