{"api_version":"1","generated_at":"2026-05-04T12:33:07+00:00","cve":"CVE-2026-7707","urls":{"html":"https://cve.report/CVE-2026-7707","api":"https://cve.report/api/cve/CVE-2026-7707.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-7707","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-7707"},"summary":{"title":"Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service","description":"A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udr_nudr_dr_handle_subscription_context of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.","state":"PUBLISHED","assigner":"VulDB","published_at":"2026-05-03 23:16:42","updated_at":"2026-05-03 23:16:42"},"problem_types":["CWE-404","CWE-404 Denial of Service"],"metrics":[{"version":"4.0","source":"cna@vuldb.com","type":"Secondary","score":"2.1","severity":"LOW","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":2.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"DECLARED","score":"5.3","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","data":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"}},{"version":"3.1","source":"cna@vuldb.com","type":"Primary","score":"4.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"4.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","data":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.1"}},{"version":"3.0","source":"CNA","type":"DECLARED","score":"4.3","severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","data":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.0"}},{"version":"2.0","source":"cna@vuldb.com","type":"Secondary","score":"4","severity":"","vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","data":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P","baseScore":4,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"}},{"version":"2.0","source":"CNA","type":"DECLARED","score":"4","severity":"","vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","data":{"baseScore":4,"vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","version":"2.0"}}],"references":[{"url":"https://vuldb.com/vuln/360883/cti","name":"https://vuldb.com/vuln/360883/cti","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/open5gs/open5gs/issues/4411","name":"https://github.com/open5gs/open5gs/issues/4411","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://vuldb.com/submit/805700","name":"https://vuldb.com/submit/805700","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://vuldb.com/vuln/360883","name":"https://vuldb.com/vuln/360883","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/open5gs/open5gs/issues/4410","name":"https://github.com/open5gs/open5gs/issues/4410","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/open5gs/open5gs/","name":"https://github.com/open5gs/open5gs/","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://vuldb.com/submit/805699","name":"https://vuldb.com/submit/805699","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-7707","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-7707","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"Open5GS","version":"affected 2.7.0","platforms":[]},{"source":"CNA","vendor":"n/a","product":"Open5GS","version":"affected 2.7.1","platforms":[]},{"source":"CNA","vendor":"n/a","product":"Open5GS","version":"affected 2.7.2","platforms":[]},{"source":"CNA","vendor":"n/a","product":"Open5GS","version":"affected 2.7.3","platforms":[]},{"source":"CNA","vendor":"n/a","product":"Open5GS","version":"affected 2.7.4","platforms":[]},{"source":"CNA","vendor":"n/a","product":"Open5GS","version":"affected 2.7.5","platforms":[]},{"source":"CNA","vendor":"n/a","product":"Open5GS","version":"affected 2.7.6","platforms":[]},{"source":"CNA","vendor":"n/a","product":"Open5GS","version":"affected 2.7.7","platforms":[]}],"timeline":[{"source":"CNA","time":"2026-05-03T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"source":"CNA","time":"2026-05-03T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"source":"CNA","time":"2026-05-03T09:26:59.000Z","lang":"en","value":"VulDB entry last update"}],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"FrankyLin (VulDB User)","lang":"en"},{"source":"CNA","value":"VulDB CNA Team","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"cpes":["cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"],"modules":["UDR"],"product":"Open5GS","vendor":"n/a","versions":[{"status":"affected","version":"2.7.0"},{"status":"affected","version":"2.7.1"},{"status":"affected","version":"2.7.2"},{"status":"affected","version":"2.7.3"},{"status":"affected","version":"2.7.4"},{"status":"affected","version":"2.7.5"},{"status":"affected","version":"2.7.6"},{"status":"affected","version":"2.7.7"}]}],"credits":[{"lang":"en","type":"reporter","value":"FrankyLin (VulDB User)"},{"lang":"en","type":"coordinator","value":"VulDB CNA Team"}],"descriptions":[{"lang":"en","value":"A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udr_nudr_dr_handle_subscription_context of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet."}],"metrics":[{"cvssV4_0":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"}},{"cvssV3_1":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.1"}},{"cvssV3_0":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.0"}},{"cvssV2_0":{"baseScore":4,"vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","version":"2.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-404","description":"Denial of Service","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-05-03T22:30:12.651Z","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB"},"references":[{"name":"VDB-360883 | Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/360883"},{"name":"VDB-360883 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/360883/cti"},{"name":"Submit #805699 | Open5gs UDR v2.7.7 Denial of Service","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/805699"},{"name":"Submit #805700 | Open5gs UDR v2.7.7 Denial of Service (Duplicate)","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/805700"},{"tags":["issue-tracking"],"url":"https://github.com/open5gs/open5gs/issues/4410"},{"tags":["exploit","issue-tracking"],"url":"https://github.com/open5gs/open5gs/issues/4411"},{"tags":["product"],"url":"https://github.com/open5gs/open5gs/"}],"timeline":[{"lang":"en","time":"2026-05-03T00:00:00.000Z","value":"Advisory disclosed"},{"lang":"en","time":"2026-05-03T02:00:00.000Z","value":"VulDB entry created"},{"lang":"en","time":"2026-05-03T09:26:59.000Z","value":"VulDB entry last update"}],"title":"Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service"}},"cveMetadata":{"assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","assignerShortName":"VulDB","cveId":"CVE-2026-7707","datePublished":"2026-05-03T22:30:12.651Z","dateReserved":"2026-05-03T07:21:51.531Z","dateUpdated":"2026-05-03T22:30:12.651Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-03 23:16:42","lastModifiedDate":"2026-05-03 23:16:42","problem_types":["CWE-404","CWE-404 Denial of Service"],"metrics":{"cvssMetricV40":[{"source":"cna@vuldb.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":2.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"cna@vuldb.com","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":2.8,"impactScore":1.4}],"cvssMetricV2":[{"source":"cna@vuldb.com","type":"Secondary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P","baseScore":4,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"7707","Ordinal":"1","Title":"Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_conte","CVE":"CVE-2026-7707","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"7707","Ordinal":"1","NoteData":"A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udr_nudr_dr_handle_subscription_context of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.","Type":"Description","Title":"Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_conte"}]}}}