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CVE-2026-45066

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12, HtmlSanitizer URL sanitization can allow off-allowlist URLs through allowLinkHosts() or allowMediaHosts() because UrlSanitizer::parse() follows RFC 3986 while browsers follow WHATWG URL parsing, and because <area href> is checked against the media policy rather than the link policy. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:78596dc36d57e96cc920bbc5a4372fb82fad9c36e62092e9b21adb912387397a
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":"html-sanitizer","vendor":"symfony","versions":[{"status":"affected","version":">= 6.1.0-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:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/affected/1

{"product":"symfony","vendor":"symfony","versions":[{"status":"affected","version":">= 6.1.0-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:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/affected/0
cwe · 2 assertions

{"cweId":"CWE-436","description":"CWE-436: Interpretation Conflict","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-184","description":"CWE-184: Incomplete List of Disallowed Inputs","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

2 source assertions
{"product":"html-sanitizer","vendor":"symfony","versions":[{"status":"affected","version":">= 6.1.0-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:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/affected/1
{"product":"symfony","vendor":"symfony","versions":[{"status":"affected","version":">= 6.1.0-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:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":2.3,"baseSeverity":"LOW","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-436","description":"CWE-436: Interpretation Conflict","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-184","description":"CWE-184: Incomplete List of Disallowed Inputs","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"name":"https://github.com/symfony/symfony/commit/d506b556d3d3906f3e8660ad82257ce87edbaac4","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/symfony/commit/d506b556d3d3906f3e8660ad82257ce87edbaac4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/references/1
{"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:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/references/2
{"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:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/references/3
{"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:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /containers/cna/references/4
{"name":"https://github.com/symfony/symfony/security/advisories/GHSA-qc95-4862-92fh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/symfony/symfony/security/advisories/GHSA-qc95-4862-92fh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f4c9ea6046842e842c9d9bc2421fdfa90ef5b9cbdf89e18c451b6756a61ee392 · sha256:d66ac14903d90749… · /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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