{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45274", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-11T18:41:13.156Z", "datePublished": "2026-08-19T14:38:58.849Z", "dateUpdated": "2026-08-19T15:23:12.071Z"}, "containers": {"cna": {"title": "MyBooks: Unauthenticated Registration Bypass via Missing Server-Side ALLOW_REGISTER Enforcement", "problemTypes": [{"descriptions": [{"cweId": "CWE-602", "lang": "en", "description": "CWE-602: Client-Side Enforcement of Server-Side Security", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-3q85-5vj5-qx5v", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-3q85-5vj5-qx5v"}, {"name": "https://github.com/PoxenStudio/mybooks/commit/a1780c98b00566af7da2fc099fe38500efc02e92", "tags": ["x_refsource_MISC"], "url": "https://github.com/PoxenStudio/mybooks/commit/a1780c98b00566af7da2fc099fe38500efc02e92"}, {"name": "https://github.com/PoxenStudio/mybooks/releases/tag/3.42.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/PoxenStudio/mybooks/releases/tag/3.42.0"}], "affected": [{"vendor": "PoxenStudio", "product": "talebook", "versions": [{"version": "< 3.42.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-19T14:38:58.849Z"}, "descriptions": [{"lang": "en", "value": "MyBooks is anebook management web server also known as Talebook. In 3.41.2 and earlier, the SignUp.post handler for POST /api/user/sign_up in webserver/handlers/user.py does not enforce the ALLOW_REGISTER configuration flag, even though the frontend hides registration controls when the flag is false. An unauthenticated remote attacker can call the endpoint directly and create a valid account on an instance whose administrator disabled public registration. The process_auth_header function in webserver/handlers/base.py also does not verify the account's active flag, so the newly created and unactivated account can authenticate immediately and access user-level API functionality. The bypass defeats the intended account-creation policy and can supply the low-privilege account required by related authorization vulnerabilities. This issue is fixed in version 3.42.0."}], "source": {"advisory": "GHSA-3q85-5vj5-qx5v", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-3q85-5vj5-qx5v", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-19T15:22:55.400640Z", "id": "CVE-2026-45274", "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": "2026-08-19T15:23:12.071Z"}}]}}

{}

{"affected": [{"affectedData": [{"product": "talebook", "vendor": "PoxenStudio", "versions": [{"status": "affected", "version": "< 3.42.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "MyBooks is anebook management web server also known as Talebook. In 3.41.2 and earlier, the SignUp.post handler for POST /api/user/sign_up in webserver/handlers/user.py does not enforce the ALLOW_REGISTER configuration flag, even though the frontend hides registration controls when the flag is false. An unauthenticated remote attacker can call the endpoint directly and create a valid account on an instance whose administrator disabled public registration. The process_auth_header function in webserver/handlers/base.py also does not verify the account's active flag, so the newly created and unactivated account can authenticate immediately and access user-level API functionality. The bypass defeats the intended account-creation policy and can supply the low-privilege account required by related authorization vulnerabilities. This issue is fixed in version 3.42.0."}], "id": "CVE-2026-45274", "lastModified": "2026-08-19T16:17:11.293", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "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": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45274", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-19T15:22:55.400640Z", "version": "2.0.3"}}]}, "published": "2026-08-19T15:17:04.450", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/PoxenStudio/mybooks/commit/a1780c98b00566af7da2fc099fe38500efc02e92"}, {"source": "security-advisories@github.com", "url": "https://github.com/PoxenStudio/mybooks/releases/tag/3.42.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-3q85-5vj5-qx5v"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-3q85-5vj5-qx5v"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-602"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.42.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "talebook", "source": "cna", "vendor": "PoxenStudio"}, "product": "talebook", "vendor": "poxenstudio"}], "created": "2026-08-19T17:00:12.874943+00:00", "updated": "2026-08-20T09:09:48.850191+00:00", "vendors": ["poxenstudio", "poxenstudio$PRODUCT$talebook"]}