CVE-2026-94093

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-94093", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-09-20T08:39:03.152Z", "datePublished": "2026-09-20T22:45:17.509Z", "dateUpdated": "2026-09-21T16:21:48.911Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-09-20T22:45:17.509Z"}, "title": "DLR-RM stable-baselines3 save_util.py VecNormalize.load deserialization", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-502", "lang": "en", "description": "Deserialization"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-20", "lang": "en", "description": "Improper Input Validation"}]}], "affected": [{"vendor": "DLR-RM", "product": "stable-baselines3", "versions": [{"version": "2.0", "status": "affected"}, {"version": "2.1", "status": "affected"}, {"version": "2.2", "status": "affected"}, {"version": "2.3", "status": "affected"}, {"version": "2.4", "status": "affected"}, {"version": "2.5", "status": "affected"}, {"version": "2.6", "status": "affected"}, {"version": "2.7", "status": "affected"}, {"version": "2.8", "status": "affected"}, {"version": "2.9.0", "status": "affected"}], "cpes": ["cpe:2.3:a:dlr-rm:stable-baselines3:*:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in DLR-RM stable-baselines3 up to 2.9.0. This affects the function PPO.load/load_replay_buffer/VecNormalize.load of the file save_util.py. Such manipulation leads to deserialization. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. In v2.9.0 the PyTorch tensor load path is hardened (weights_only=True), but that hardening was later reverted on master via PR #1913 \"Hotfix: revert loading with weights_only=True\" [blocked] to fix PyTorch 1.13 compat - so even the one \"safe\" path is inconsistent across versions. #2281 was closed as a duplicate of #1831 since both are unsafe pickle deserialization - but #1831's fix (PR #41) only gated the Hugging Face Hub loader in the separate huggingface_sb3 package. This finding covers the core stable_baselines3 load APIs (PPO.load, load_replay_buffer, VecNormalize.load), which have no safe mode or gate and remained exploitable in v2.9.0 until the outstanding hardening (PR #2264) ships."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 6.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 6.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-09-20T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-09-20T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-09-20T10:44:18.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "__lbz__ (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/408021", "name": "VDB-408021 | DLR-RM stable-baselines3 save_util.py VecNormalize.load deserialization", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/408021/cti", "name": "VDB-408021 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-94093", "name": "CVE-2026-94093 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/952734", "name": "Submit #952734 | DLR-RM stable-baselines3 v2.9.0 rce", "tags": ["third-party-advisory"]}, {"url": "https://github.com/DLR-RM/stable-baselines3/issues/2281", "tags": ["issue-tracking"]}, {"url": "https://github.com/DLR-RM/stable-baselines3/", "tags": ["product"]}], "x_generator": ["VulDB PVTS v202609"]}, "adp": [{"references": [{"url": "https://github.com/DLR-RM/stable-baselines3/issues/2281", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-21T16:20:51.056033Z", "id": "CVE-2026-94093", "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": "2026-09-21T16:21:48.911Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-94093", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-21T16:20:51.056033Z"}}}], "references": [{"url": "https://github.com/DLR-RM/stable-baselines3/issues/2281", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-21T16:21:29.305Z"}}], "cna": {"title": "DLR-RM stable-baselines3 save_util.py VecNormalize.load deserialization", "credits": [{"lang": "en", "type": "reporter", "value": "__lbz__ (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:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 6.3, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 6.3, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}], "affected": [{"cpes": ["cpe:2.3:a:dlr-rm:stable-baselines3:*:*:*:*:*:*:*:*"], "vendor": "DLR-RM", "product": "stable-baselines3", "versions": [{"status": "affected", "version": "2.0"}, {"status": "affected", "version": "2.1"}, {"status": "affected", "version": "2.2"}, {"status": "affected", "version": "2.3"}, {"status": "affected", "version": "2.4"}, {"status": "affected", "version": "2.5"}, {"status": "affected", "version": "2.6"}, {"status": "affected", "version": "2.7"}, {"status": "affected", "version": "2.8"}, {"status": "affected", "version": "2.9.0"}]}], "timeline": [{"lang": "en", "time": "2026-09-20T00:00:00.000Z", "value": "Advisory disclosed"}, {"lang": "en", "time": "2026-09-20T02:00:00.000Z", "value": "VulDB entry created"}, {"lang": "en", "time": "2026-09-20T10:44:18.000Z", "value": "VulDB entry last update"}], "references": [{"url": "https://vuldb.com/vuln/408021", "name": "VDB-408021 | DLR-RM stable-baselines3 save_util.py VecNormalize.load deserialization", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/408021/cti", "name": "VDB-408021 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-94093", "name": "CVE-2026-94093 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/952734", "name": "Submit #952734 | DLR-RM stable-baselines3 v2.9.0 rce", "tags": ["third-party-advisory"]}, {"url": "https://github.com/DLR-RM/stable-baselines3/issues/2281", "tags": ["issue-tracking"]}, {"url": "https://github.com/DLR-RM/stable-baselines3/", "tags": ["product"]}], "x_generator": ["VulDB PVTS v202609"], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in DLR-RM stable-baselines3 up to 2.9.0. This affects the function PPO.load/load_replay_buffer/VecNormalize.load of the file save_util.py. Such manipulation leads to deserialization. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. In v2.9.0 the PyTorch tensor load path is hardened (weights_only=True), but that hardening was later reverted on master via PR #1913 \"Hotfix: revert loading with weights_only=True\" [blocked] to fix PyTorch 1.13 compat - so even the one \"safe\" path is inconsistent across versions. #2281 was closed as a duplicate of #1831 since both are unsafe pickle deserialization - but #1831's fix (PR #41) only gated the Hugging Face Hub loader in the separate huggingface_sb3 package. This finding covers the core stable_baselines3 load APIs (PPO.load, load_replay_buffer, VecNormalize.load), which have no safe mode or gate and remained exploitable in v2.9.0 until the outstanding hardening (PR #2264) ships."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-502", "description": "Deserialization"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-20", "description": "Improper Input Validation"}]}], "providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-09-20T22:45:17.509Z"}}}, "cveMetadata": {"cveId": "CVE-2026-94093", "state": "PUBLISHED", "dateUpdated": "2026-09-21T16:21:48.911Z", "dateReserved": "2026-09-20T08:39:03.152Z", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "datePublished": "2026-09-20T22:45:17.509Z", "assignerShortName": "VulDB"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:dlr-rm:stable-baselines3:*:*:*:*:*:*:*:*"], "product": "stable-baselines3", "vendor": "DLR-RM", "versions": [{"status": "affected", "version": "2.0"}, {"status": "affected", "version": "2.1"}, {"status": "affected", "version": "2.2"}, {"status": "affected", "version": "2.3"}, {"status": "affected", "version": "2.4"}, {"status": "affected", "version": "2.5"}, {"status": "affected", "version": "2.6"}, {"status": "affected", "version": "2.7"}, {"status": "affected", "version": "2.8"}, {"status": "affected", "version": "2.9.0"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in DLR-RM stable-baselines3 up to 2.9.0. This affects the function PPO.load/load_replay_buffer/VecNormalize.load of the file save_util.py. Such manipulation leads to deserialization. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. In v2.9.0 the PyTorch tensor load path is hardened (weights_only=True), but that hardening was later reverted on master via PR #1913 \"Hotfix: revert loading with weights_only=True\" [blocked] to fix PyTorch 1.13 compat - so even the one \"safe\" path is inconsistent across versions. #2281 was closed as a duplicate of #1831 since both are unsafe pickle deserialization - but #1831's fix (PR #41) only gated the Hugging Face Hub loader in the separate huggingface_sb3 package. This finding covers the core stable_baselines3 load APIs (PPO.load, load_replay_buffer, VecNormalize.load), which have no safe mode or gate and remained exploitable in v2.9.0 until the outstanding hardening (PR #2264) ships."}], "id": "CVE-2026-94093", "lastModified": "2026-09-21T17:19:19.420", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Secondary"}], "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": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/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": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-94093", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-21T16:20:51.056033Z", "version": "2.0.3"}}]}, "published": "2026-09-20T23:17:03.343", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/DLR-RM/stable-baselines3/"}, {"source": "cna@vuldb.com", "url": "https://github.com/DLR-RM/stable-baselines3/issues/2281"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-94093"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/952734"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/408021"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/408021/cti"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/DLR-RM/stable-baselines3/issues/2281"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-502"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.0,2.0]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.1,2.1]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.2,2.2]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.3,2.3]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.4,2.4]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.5,2.5]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.6,2.6]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.7,2.7]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.8,2.8]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.9.0,2.9.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "stable-baselines3", "source": "cna", "vendor": "DLR-RM"}, "product": "stable-baselines3", "vendor": "dlr-rm"}], "created": "2026-09-21T00:30:06.572198+00:00", "updated": "2026-09-21T10:01:58.341646+00:00", "vendors": ["dlr-rm", "dlr-rm$PRODUCT$stable-baselines3"]}