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CVE-2026-45077

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 li
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a0a0bfd7cf9d6c7e9f936177b1ce95c56aba119f96b1a3db969430cde8e9f1af
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"monolog-bridge","vendor":"symfony","versions":[{"status":"affected","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"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/affected/1

{"product":"symfony","vendor":"symfony","versions":[{"status":"affected","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"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/affected/0
cwe · 2 assertions

{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-668","description":"CWE-668: Exposure of Resource to Wrong Sphere","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

2 source assertions
{"product":"monolog-bridge","vendor":"symfony","versions":[{"status":"affected","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"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/affected/1
{"product":"symfony","vendor":"symfony","versions":[{"status":"affected","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"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","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","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-668","description":"CWE-668: Exposure of Resource to Wrong Sphere","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/problemTypes/1/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/references/1
{"name":"https://github.com/symfony/symfony/releases/tag/v5.4.52","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/symfony/releases/tag/v5.4.52"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/references/2
{"name":"https://github.com/symfony/symfony/releases/tag/v6.4.40","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/symfony/releases/tag/v6.4.40"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/references/3
{"name":"https://github.com/symfony/symfony/releases/tag/v7.4.12","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/symfony/releases/tag/v7.4.12"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/references/4
{"name":"https://github.com/symfony/symfony/releases/tag/v8.0.12","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/symfony/releases/tag/v8.0.12"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/references/5
{"name":"https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v","tags":["x_refsource_CONFIRM"],"url":"https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f6152f61a9d8ddc0af08f72b8812c73402caeac08bc6f0cc673bfead7e269e0d · sha256:24f6792a28021053… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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