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CVE-2026-8034

A server-side request forgery (SSRF) vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a different URL parser than the request library, enabling a crafted URL to pass validation while directing the request to an unintended host. Exploitation required network access to the GitHub Enterprise Server
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9ae836376bdf81b0969e6540b173281cd4bff11609efd8508f9e2e33dfcec8d0
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-436","description":"CWE-436 Interpretation Conflict","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /containers/cna/problemTypes/0/descriptions/1

{"cweId":"CWE-918","description":"CWE-918 Server-Side request forgery (SSRF)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"affected","product":"Enterprise Server","vendor":"GitHub","versions":[{"changes":[{"at":"3.16.18","status":"unaffected"}],"lessThanOrEqual":"3.16.17","status":"affected","version":"3.16.0","versionType":"semver"},{"changes":[{"at":"3.17.15","status":"unaffected"}],"lessThanOrEqual":"3.17.14","status":"affected","version":"3.17.0","versionType":"semver"},{"changes":[{"at":"3.18.9","status":"unaffected"}],"lessThanOrEqual":"3.18.8","status":"affected","version":"3.18.0","versionType":"semver"},{"changes":[{"at":"3.19.6","status":"unaffected"}],"lessThanOrEqual":"3.19.5","status…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /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":7.9,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-436","description":"CWE-436 Interpretation Conflict","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /containers/cna/problemTypes/0/descriptions/1
{"cweId":"CWE-918","description":"CWE-918 Server-Side request forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["release-notes"],"url":"https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.18"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /containers/cna/references/0
{"tags":["release-notes"],"url":"https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.15"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /containers/cna/references/1
{"tags":["release-notes"],"url":"https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /containers/cna/references/2
{"tags":["release-notes"],"url":"https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /containers/cna/references/3
{"tags":["release-notes"],"url":"https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:849aceddd02744fa8de0df55532dca99d4adecfd095eae8282f2ad325aaf6873 · sha256:68a933753cf9b04c… · /containers/cna/references/4

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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