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CVE-2026-45070

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, Symfony\Component\Mime\Header\ParameterizedHeader validates and encodes parameter values but emits parameter names verbatim, allowing a caller that derives a parameter name from untrusted input to include CRLF or other non-token bytes and inject additional headers into rendered structured mail headers such as Content-Type or Content-Disposition. This issu
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2eb7c68d885be53e3483f9437b2959aff3c5e5e04d5fb2101987915c4d829c47
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"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:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /containers/cna/affected/0

{"product":"mime","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:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"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:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /containers/cna/affected/0
{"product":"mime","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:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","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:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-93","description":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/symfony/symfony/commit/e62ea217f8b4ca8ae922ad0f949e0c4dc1f9b613","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/symfony/commit/e62ea217f8b4ca8ae922ad0f949e0c4dc1f9b613"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /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:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /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:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /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:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /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:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /containers/cna/references/5
{"name":"https://github.com/symfony/symfony/security/advisories/GHSA-vqc8-7275-q272","tags":["x_refsource_CONFIRM"],"url":"https://github.com/symfony/symfony/security/advisories/GHSA-vqc8-7275-q272"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ed7b5d94a56528ed69df5497528d0f42195c22eccafc73a0bb6c6300db8e3517 · sha256:3b30023c74d02270… · /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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