CVE Explorer
CVE-2026-1999
An incorrect authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to merge their own pull request into a repository without having push access by exploiting an authorization bypass in the enable_auto_merge mutation for pull requests. This issue only affected repositories that allow forking as the attack relies on opening a pull request from an attacker-controlled fork into the target repository. Exploitation was only possible in specific scenarios. It r
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":"3.17.11","status":"unaffected"}],"lessThan":"3.17.11","status":"affected","version":"3.17.0","versionType":"semver"},{"changes":[{"at":"3.18.5","status":"unaffected"}],"lessThan":"3.18.5","status":"affected","version":"3.18.0","versionType":"semver"},{"changes":[{"at":"3.19.2","status":"unaffected"}],"lessThan":"3.19.2","status":"affected","version":"3.19.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:da60dd9f001c4d0a6f67dc280049771feb839ce6a64b5c2afbd7b4a9545c0921 · sha256:8451e5a44aec416f… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7.1,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:L/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:da60dd9f001c4d0a6f67dc280049771feb839ce6a64b5c2afbd7b4a9545c0921 · sha256:8451e5a44aec416f… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:da60dd9f001c4d0a6f67dc280049771feb839ce6a64b5c2afbd7b4a9545c0921 · sha256:8451e5a44aec416f… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"tags":["release-notes"],"url":"https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.11"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:da60dd9f001c4d0a6f67dc280049771feb839ce6a64b5c2afbd7b4a9545c0921 · sha256:8451e5a44aec416f… · /containers/cna/references/0
{"tags":["release-notes"],"url":"https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.5"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:da60dd9f001c4d0a6f67dc280049771feb839ce6a64b5c2afbd7b4a9545c0921 · sha256:8451e5a44aec416f… · /containers/cna/references/1
{"tags":["release-notes"],"url":"https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:da60dd9f001c4d0a6f67dc280049771feb839ce6a64b5c2afbd7b4a9545c0921 · sha256:8451e5a44aec416f… · /containers/cna/references/2
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.