CVE-2026-8121

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8121", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-05-07T16:56:47.235Z", "datePublished": "2026-05-08T00:30:10.368Z", "dateUpdated": "2026-05-08T14:12:22.531Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-05-08T00:30:10.368Z"}, "title": "Open5GS NSSF conv.c ogs_sbi_parse_plmn_list denial of service", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-404", "lang": "en", "description": "Denial of Service"}]}], "affected": [{"vendor": "n/a", "product": "Open5GS", "versions": [{"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", "status": "affected"}], "cpes": ["cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"], "modules": ["NSSF"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_parse_plmn_list in the library /lib/sbi/conv.c of the component NSSF. The manipulation leads to denial of service. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.3, "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", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 4.3, "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", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 4.3, "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", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 4, "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-05-07T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-05-07T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-05-07T19:02:02.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "FrankyLin (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/361908", "name": "VDB-361908 | Open5GS NSSF conv.c ogs_sbi_parse_plmn_list denial of service", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/361908/cti", "name": "VDB-361908 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/808422", "name": "Submit #808422 | Open5gs NSSF v2.7.7 Denial of Service", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/808424", "name": "Submit #808424 | Open5gs NSSF v2.7.7 Denial of Service (Duplicate)", "tags": ["third-party-advisory"]}, {"url": "https://github.com/open5gs/open5gs/issues/4433", "tags": ["exploit", "issue-tracking"]}, {"url": "https://github.com/open5gs/open5gs/", "tags": ["product"]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-08T14:12:14.472684Z", "id": "CVE-2026-8121", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-08T14:12:22.531Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-8121", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-08T14:12:14.472684Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-08T14:12:19.362Z"}}], "cna": {"title": "Open5GS NSSF conv.c ogs_sbi_parse_plmn_list denial of service", "credits": [{"lang": "en", "type": "reporter", "value": "FrankyLin (VulDB User)"}, {"lang": "en", "type": "coordinator", "value": "VulDB CNA Team"}], "metrics": [{"cvssV4_0": {"version": "4.0", "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"}}, {"cvssV3_1": {"version": "3.1", "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"}}, {"cvssV3_0": {"version": "3.0", "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"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 4, "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR"}}], "affected": [{"cpes": ["cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"], "vendor": "n/a", "modules": ["NSSF"], "product": "Open5GS", "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"}]}], "timeline": [{"lang": "en", "time": "2026-05-07T00:00:00.000Z", "value": "Advisory disclosed"}, {"lang": "en", "time": "2026-05-07T02:00:00.000Z", "value": "VulDB entry created"}, {"lang": "en", "time": "2026-05-07T19:02:02.000Z", "value": "VulDB entry last update"}], "references": [{"url": "https://vuldb.com/vuln/361908", "name": "VDB-361908 | Open5GS NSSF conv.c ogs_sbi_parse_plmn_list denial of service", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/361908/cti", "name": "VDB-361908 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/808422", "name": "Submit #808422 | Open5gs NSSF v2.7.7 Denial of Service", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/808424", "name": "Submit #808424 | Open5gs NSSF v2.7.7 Denial of Service (Duplicate)", "tags": ["third-party-advisory"]}, {"url": "https://github.com/open5gs/open5gs/issues/4433", "tags": ["exploit", "issue-tracking"]}, {"url": "https://github.com/open5gs/open5gs/", "tags": ["product"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_parse_plmn_list in the library /lib/sbi/conv.c of the component NSSF. The manipulation leads to denial of service. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-404", "description": "Denial of Service"}]}], "providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-05-08T00:30:10.368Z"}}}, "cveMetadata": {"cveId": "CVE-2026-8121", "state": "PUBLISHED", "dateUpdated": "2026-05-08T14:12:22.531Z", "dateReserved": "2026-05-07T16:56:47.235Z", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "datePublished": "2026-05-08T00:30:10.368Z", "assignerShortName": "VulDB"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"], "modules": ["NSSF"], "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"}]}], "source": "cna@vuldb.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*", "matchCriteriaId": "0A46BC99-08E7-4D40-A908-76121E4AFCD5", "versionEndIncluding": "2.7.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_parse_plmn_list in the library /lib/sbi/conv.c of the component NSSF. The manipulation leads to denial of service. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet."}, {"lang": "es", "value": "Se ha encontrado una vulnerabilidad en Open5GS hasta la versi\u00f3n 2.7.7. El elemento afectado es la funci\u00f3n ogs_sbi_parse_plmn_list en la biblioteca /lib/sbi/conv.c del componente NSSF. La manipulaci\u00f3n conduce a una denegaci\u00f3n de servicio. El ataque es posible de llevar a cabo de forma remota. El exploit ha sido divulgado al p\u00fablico y puede ser utilizado. El proyecto fue informado del problema tempranamente a trav\u00e9s de un informe de problema, pero a\u00fan no ha respondido."}], "id": "CVE-2026-8121", "lastModified": "2026-11-11T23:10:00.263", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 4.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.1, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-8121", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-08T14:12:14.472684Z", "version": "2.0.3"}}]}, "published": "2026-05-08T01:16:09.860", "references": [{"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://github.com/open5gs/open5gs/"}, {"source": "cna@vuldb.com", "tags": ["Exploit", "Issue Tracking"], "url": "https://github.com/open5gs/open5gs/issues/4433"}, {"source": "cna@vuldb.com", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/808422"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/808424"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/vuln/361908"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/vuln/361908/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-404"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.7.0,2.7.7]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Open5GS", "source": "cna", "vendor": "n/a"}, "product": "open5gs", "vendor": "open5gs"}], "created": "2026-05-08T02:30:42.814132+00:00", "updated": "2026-05-08T02:30:43.134970+00:00", "vendors": ["open5gs", "open5gs$PRODUCT$open5gs"]}