{"id":"CVE-2026-45077","state":"PUBLISHED","title":"Symfony: Unauthenticated PHP Object Deserialization in MonologBridge server:log Listener","description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the server:log listener (Symfony\\Bridge\\Monolog\\Command\\ServerLogCommand) binds to 0.0.0.0:9911 by default and processes each received frame with unserialize(base64_decode($message)) without authentication, integrity checks, or an allowed_classes allowlist, allowing any reachable host to submit attacker-chosen serialized PHP payloads that can crash the listener and may trigger object-injection gadget effects. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.","publishedAt":"2026-07-14T17:46:33.837Z","updatedAt":"2026-07-14T18:24:19.069Z","severity":{"score":8.3,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["symfony symfony","symfony monolog-bridge"],"affected":[{"vendor":"symfony","product":"symfony","versions":[{"version":"< 5.4.52","status":"affected"},{"version":">= 6.0.0-BETA1, < 6.4.40","status":"affected"},{"version":">= 7.0.0-BETA1, < 7.4.12","status":"affected"},{"version":">= 8.0.0-BETA1, < 8.0.12","status":"affected"}]},{"vendor":"symfony","product":"monolog-bridge","versions":[{"version":"< 5.4.52","status":"affected"},{"version":">= 6.0.0-BETA1, < 6.4.40","status":"affected"},{"version":">= 7.0.0-BETA1, < 7.4.12","status":"affected"},{"version":">= 8.0.0-BETA1, < 8.0.12","status":"affected"}]}],"references":["https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v","https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4","https://github.com/symfony/symfony/releases/tag/v5.4.52","https://github.com/symfony/symfony/releases/tag/v6.4.40","https://github.com/symfony/symfony/releases/tag/v7.4.12","https://github.com/symfony/symfony/releases/tag/v8.0.12"],"weaknesses":["CWE-502","CWE-668"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45077.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45077","state":"PUBLISHED","datePublished":"2026-07-14T17:46:33.837Z","dateUpdated":"2026-07-14T18:24:19.069Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-08T18:45:10.097Z"},"containers":{"cna":{"title":"Symfony: Unauthenticated PHP Object Deserialization in MonologBridge server:log Listener","descriptions":[{"lang":"en","value":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the server:log listener (Symfony\\Bridge\\Monolog\\Command\\ServerLogCommand) binds to 0.0.0.0:9911 by default and processes each received frame with unserialize(base64_decode($message)) without authentication, integrity checks, or an allowed_classes allowlist, allowing any reachable host to submit attacker-chosen serialized PHP payloads that can crash the listener and may trigger object-injection gadget effects. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12."}],"affected":[{"vendor":"symfony","product":"symfony","versions":[{"version":"< 5.4.52","status":"affected"},{"version":">= 6.0.0-BETA1, < 6.4.40","status":"affected"},{"version":">= 7.0.0-BETA1, < 7.4.12","status":"affected"},{"version":">= 8.0.0-BETA1, < 8.0.12","status":"affected"}]},{"vendor":"symfony","product":"monolog-bridge","versions":[{"version":"< 5.4.52","status":"affected"},{"version":">= 6.0.0-BETA1, < 6.4.40","status":"affected"},{"version":">= 7.0.0-BETA1, < 7.4.12","status":"affected"},{"version":">= 8.0.0-BETA1, < 8.0.12","status":"affected"}]}],"references":[{"url":"https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v","name":"https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4","name":"https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4","tags":["x_refsource_MISC"]},{"url":"https://github.com/symfony/symfony/releases/tag/v5.4.52","name":"https://github.com/symfony/symfony/releases/tag/v5.4.52","tags":["x_refsource_MISC"]},{"url":"https://github.com/symfony/symfony/releases/tag/v6.4.40","name":"https://github.com/symfony/symfony/releases/tag/v6.4.40","tags":["x_refsource_MISC"]},{"url":"https://github.com/symfony/symfony/releases/tag/v7.4.12","name":"https://github.com/symfony/symfony/releases/tag/v7.4.12","tags":["x_refsource_MISC"]},{"url":"https://github.com/symfony/symfony/releases/tag/v8.0.12","name":"https://github.com/symfony/symfony/releases/tag/v8.0.12","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.3,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","lang":"en","description":"CWE-502: Deserialization of Untrusted Data","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-668","lang":"en","description":"CWE-668: Exposure of Resource to Wrong Sphere","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-14T17:46:33.837Z"},"source":{"advisory":"GHSA-m7v2-7gxm-vc2v","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-14T18:24:06.862837Z","id":"CVE-2026-45077","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-14T18:24:19.069Z"}}]}}}