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CVE-2026-5512

An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their numeric ID. The mobile upload policy API endpoint did not perform an early authorization check, and validation error messages included the full repository name for repositories the caller did not have access to. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4d4708df6d299226d20357a21678e4dc72ff478be26a197b868d4426067bf0cc
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"affected","product":"Enterprise Server","vendor":"GitHub","versions":[{"changes":[{"at":"3.14.26","status":"unaffected"}],"lessThanOrEqual":"3.14.25","status":"affected","version":"3.14.0","versionType":"semver"},{"changes":[{"at":"3.15.21","status":"unaffected"}],"lessThanOrEqual":"3.15.20","status":"affected","version":"3.15.0","versionType":"semver"},{"changes":[{"at":"3.16.17","status":"unaffected"}],"lessThanOrEqual":"3.16.16","status":"affected","version":"3.16.0","versionType":"semver"},{"changes":[{"at":"3.17.14","status":"unaffected"}],"lessThanOrEqual":"3.17.13","st…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9871727e9e377b9913afd4473b4730346704762089665d460ba0066dd2f17e7d · sha256:9017633d0f598b1f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"LOW","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9871727e9e377b9913afd4473b4730346704762089665d460ba0066dd2f17e7d · sha256:9017633d0f598b1f… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-201","description":"CWE-201 Insertion of sensitive information into sent data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9871727e9e377b9913afd4473b4730346704762089665d460ba0066dd2f17e7d · sha256:9017633d0f598b1f… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"url":"https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.26"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9871727e9e377b9913afd4473b4730346704762089665d460ba0066dd2f17e7d · sha256:9017633d0f598b1f… · /containers/cna/references/0
{"url":"https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.21"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9871727e9e377b9913afd4473b4730346704762089665d460ba0066dd2f17e7d · sha256:9017633d0f598b1f… · /containers/cna/references/1
{"url":"https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.17"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9871727e9e377b9913afd4473b4730346704762089665d460ba0066dd2f17e7d · sha256:9017633d0f598b1f… · /containers/cna/references/2
{"url":"https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.14"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9871727e9e377b9913afd4473b4730346704762089665d460ba0066dd2f17e7d · sha256:9017633d0f598b1f… · /containers/cna/references/3
{"url":"https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9871727e9e377b9913afd4473b4730346704762089665d460ba0066dd2f17e7d · sha256:9017633d0f598b1f… · /containers/cna/references/4
{"url":"https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9871727e9e377b9913afd4473b4730346704762089665d460ba0066dd2f17e7d · sha256:9017633d0f598b1f… · /containers/cna/references/5
{"url":"https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9871727e9e377b9913afd4473b4730346704762089665d460ba0066dd2f17e7d · sha256:9017633d0f598b1f… · /containers/cna/references/6

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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