{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-1660", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "state": "PUBLISHED", "assignerShortName": "GitLab", "dateReserved": "2026-01-29T20:03:52.499Z", "datePublished": "2026-04-22T16:04:51.382Z", "dateUpdated": "2026-04-22T17:39:02.958Z"}, "containers": {"cna": {"title": "Allocation of Resources Without Limits or Throttling in GitLab", "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.3 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user to cause denial of service when importing issues due to improper input validation."}], "affected": [{"vendor": "GitLab", "product": "GitLab", "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "versions": [{"version": "12.3", "status": "affected", "lessThan": "18.9.6", "versionType": "semver"}, {"version": "18.10", "status": "affected", "lessThan": "18.10.4", "versionType": "semver"}, {"version": "18.11", "status": "affected", "lessThan": "18.11.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling", "cweId": "CWE-770", "type": "CWE"}]}], "references": [{"url": "https://hackerone.com/reports/3518743", "name": "HackerOne Bug Bounty Report #3518743", "tags": ["technical-description", "exploit", "permissions-required"]}, {"url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/588200"}, {"url": "https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM"}}], "solutions": [{"lang": "en", "value": "Upgrade to versions 18.9.6, 18.10.4, 18.11.1 or above."}], "credits": [{"lang": "en", "value": "Thanks [a92847865](https://hackerone.com/a92847865) for reporting this vulnerability through our HackerOne bug bounty program", "type": "finder"}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2026-04-22T16:04:51.382Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-22T17:38:02.392370Z", "id": "CVE-2026-1660", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-22T17:39:02.958Z"}}]}}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[12.3,18.9.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[18.10,18.10.4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[18.11,18.11.1)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "GitLab", "source": "cna", "vendor": "GitLab"}, "product": "gitlab", "vendor": "gitlab"}], "analysis": {"en": {"generated_at": "2026-04-22T18:22:27.459060+00:00", "value": {"mitigation_remediation": ["Upgrade to GitLab 18.9.6, 18.10.4, 18.11.1 or later", "Limit the number of issues that may be imported in a single request to conserve system resources", "Monitor server resource usage for abnormal spikes during issue import operations"], "summary": {"action": "Apply Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "Both the Community Edition and Enterprise Edition of GitLab, from version 12.3 up to and excluding 18.9.6, 18.10.4, and 18.11.1, are vulnerable. Any deployment that has not been upgraded to these patches is at risk.", "description_and_impact": "An authenticated user can trigger resource exhaustion by importing a large number of issues, causing the GitLab instance to become unresponsive. The flaw stems from missing limits or throttling during input validation, allowing an attacker to overwhelm server resources. This results in denial of service for all users accessing the platform.", "risk_and_exploitability": "The CVSS score of 6.5 indicates a moderate severity, and the current EPSS score is not available, with the vulnerability not listed in CISA KEV. The exploit requires the attacker to have valid credentials with issue\u2011import privileges; if successful, it can disrupt overall service availability but does not compromise data confidentiality or integrity."}}}}, "created": "2026-04-22T18:30:23.753146+00:00", "updated": "2026-04-22T19:15:24.274077+00:00", "vendors": ["gitlab", "gitlab$PRODUCT$gitlab"]}