CVE-2026-5296 (GCVE-0-2026-5296)
Vulnerability from cvelistv5 – Published: 2026-05-27 17:55 – Updated: 2026-05-27 19:01
VLAI
Title
Missing Authorization in GitLab
Summary
GitLab has remediated an issue in GitLab EE affecting all versions from 18.7 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that when foundational flows were enabled at the group level, could have allowed an authenticated user with developer-role permissions to bypass flow restrictions under certain conditions.
Severity
4.3 (Medium)
CWE
- CWE-862 - Missing Authorization
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/work_items… | |
| https://hackerone.com/reports/3626303 | technical-descriptionexploitpermissions-required |
| https://about.gitlab.com/releases/2026/05/27/patc… |
Impacted products
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-5296",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-27T18:58:53.696216Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T19:01:02.944Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "GitLab",
"repo": "git://git@gitlab.com:gitlab-org/gitlab.git",
"vendor": "GitLab",
"versions": [
{
"lessThan": "18.10.7",
"status": "affected",
"version": "18.7",
"versionType": "semver"
},
{
"lessThan": "18.11.4",
"status": "affected",
"version": "18.11",
"versionType": "semver"
},
{
"lessThan": "19.0.1",
"status": "affected",
"version": "19.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Thanks [rogerace](https://hackerone.com/rogerace) for reporting this vulnerability through our HackerOne bug bounty program"
}
],
"descriptions": [
{
"lang": "en",
"value": "GitLab has remediated an issue in GitLab EE affecting all versions from 18.7 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that when foundational flows were enabled at the group level, could have allowed an authenticated user with developer-role permissions to bypass flow restrictions under certain conditions."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862: Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T17:55:18.937Z",
"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
"shortName": "GitLab"
},
"references": [
{
"url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/595423"
},
{
"name": "HackerOne Bug Bounty Report #3626303",
"tags": [
"technical-description",
"exploit",
"permissions-required"
],
"url": "https://hackerone.com/reports/3626303"
},
{
"url": "https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to versions 18.10.7, 18.11.4, 19.0.1 or above."
}
],
"title": "Missing Authorization in GitLab"
}
},
"cveMetadata": {
"assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
"assignerShortName": "GitLab",
"cveId": "CVE-2026-5296",
"datePublished": "2026-05-27T17:55:18.937Z",
"dateReserved": "2026-04-01T00:04:42.884Z",
"dateUpdated": "2026-05-27T19:01:02.944Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-5296\",\"sourceIdentifier\":\"cve@gitlab.com\",\"published\":\"2026-05-27T19:16:24.450\",\"lastModified\":\"2026-05-27T20:46:56.457\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"GitLab has remediated an issue in GitLab EE affecting all versions from 18.7 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that when foundational flows were enabled at the group level, could have allowed an authenticated user with developer-role permissions to bypass flow restrictions under certain conditions.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@gitlab.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"cve@gitlab.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"18.7.0\",\"versionEndExcluding\":\"18.10.7\",\"matchCriteriaId\":\"630B547B-DD30-47B8-968D-8F3D6849E215\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"18.11.0\",\"versionEndExcluding\":\"18.11.4\",\"matchCriteriaId\":\"F4085D50-86E4-4FC7-BB90-5181E6E65DEC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:gitlab:gitlab:19.0.0:*:*:*:enterprise:*:*:*\",\"matchCriteriaId\":\"57A0D68B-909C-416E-8EAE-A14886F4ABA9\"}]}]}],\"references\":[{\"url\":\"https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/\",\"source\":\"cve@gitlab.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://gitlab.com/gitlab-org/gitlab/-/work_items/595423\",\"source\":\"cve@gitlab.com\",\"tags\":[\"Broken Link\"]},{\"url\":\"https://hackerone.com/reports/3626303\",\"source\":\"cve@gitlab.com\",\"tags\":[\"Permissions Required\"]}]}}",
"vulnrichment": {
"containers": "{\"cna\": {\"title\": \"Missing Authorization in GitLab\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"GitLab has remediated an issue in GitLab EE affecting all versions from 18.7 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that when foundational flows were enabled at the group level, could have allowed an authenticated user with developer-role permissions to bypass flow restrictions under certain conditions.\"}], \"affected\": [{\"vendor\": \"GitLab\", \"product\": \"GitLab\", \"repo\": \"git://git@gitlab.com:gitlab-org/gitlab.git\", \"cpes\": [\"cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*\"], \"versions\": [{\"version\": \"18.7\", \"status\": \"affected\", \"lessThan\": \"18.10.7\", \"versionType\": \"semver\"}, {\"version\": \"18.11\", \"status\": \"affected\", \"lessThan\": \"18.11.4\", \"versionType\": \"semver\"}, {\"version\": \"19.0\", \"status\": \"affected\", \"lessThan\": \"19.0.1\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"CWE-862: Missing Authorization\", \"cweId\": \"CWE-862\", \"type\": \"CWE\"}]}], \"references\": [{\"url\": \"https://gitlab.com/gitlab-org/gitlab/-/work_items/595423\"}, {\"url\": \"https://hackerone.com/reports/3626303\", \"name\": \"HackerOne Bug Bounty Report #3626303\", \"tags\": [\"technical-description\", \"exploit\", \"permissions-required\"]}, {\"url\": \"https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-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:L/A:N\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\", \"baseScore\": 4.3, \"baseSeverity\": \"MEDIUM\"}}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to versions 18.10.7, 18.11.4, 19.0.1 or above.\"}], \"credits\": [{\"lang\": \"en\", \"value\": \"Thanks [rogerace](https://hackerone.com/rogerace) for reporting this vulnerability through our HackerOne bug bounty program\", \"type\": \"finder\"}], \"providerMetadata\": {\"orgId\": \"ceab7361-8a18-47b1-92ba-4d7d25f6715a\", \"shortName\": \"GitLab\", \"dateUpdated\": \"2026-05-27T17:55:18.937Z\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-5296\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-27T18:58:53.696216Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-27T19:01:00.207Z\"}}]}",
"cveMetadata": "{\"cveId\": \"CVE-2026-5296\", \"assignerOrgId\": \"ceab7361-8a18-47b1-92ba-4d7d25f6715a\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"GitLab\", \"dateReserved\": \"2026-04-01T00:04:42.884Z\", \"datePublished\": \"2026-05-27T17:55:18.937Z\", \"dateUpdated\": \"2026-05-27T19:01:02.944Z\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…