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CVE-2026-45063

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, X509Authenticator extracts the user identifier from $_SERVER['SSL_CLIENT_S_DN'] with an unanchored regex that matches emailAddress= anywhere in the distinguished name, allowing an attacker with a trusted certificate containing emailAddress=victim inside another RDN value such as CN to authenticate as the victim. This issue is fixed in versions 5.4.52, 6.4
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:540196191a846c2a4e165c417cc49afd17274000c66fe6955c9d7dffbcc8e15c
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"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:v2:40561faefa59c6feaf1dd6485d17559b7e3b36da218100a907d5c077b0610f46 · sha256:e2a6d0b34036b123… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":9.1,"baseSeverity":"CRITICAL","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:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:40561faefa59c6feaf1dd6485d17559b7e3b36da218100a907d5c077b0610f46 · sha256:e2a6d0b34036b123… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-290","description":"CWE-290: Authentication Bypass by Spoofing","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:40561faefa59c6feaf1dd6485d17559b7e3b36da218100a907d5c077b0610f46 · sha256:e2a6d0b34036b123… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/symfony/symfony/commit/59ef484029601a7af06f5e06c6ed921fdcea5a0d","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/symfony/commit/59ef484029601a7af06f5e06c6ed921fdcea5a0d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:40561faefa59c6feaf1dd6485d17559b7e3b36da218100a907d5c077b0610f46 · sha256:e2a6d0b34036b123… · /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:v2:40561faefa59c6feaf1dd6485d17559b7e3b36da218100a907d5c077b0610f46 · sha256:e2a6d0b34036b123… · /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:v2:40561faefa59c6feaf1dd6485d17559b7e3b36da218100a907d5c077b0610f46 · sha256:e2a6d0b34036b123… · /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:v2:40561faefa59c6feaf1dd6485d17559b7e3b36da218100a907d5c077b0610f46 · sha256:e2a6d0b34036b123… · /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:v2:40561faefa59c6feaf1dd6485d17559b7e3b36da218100a907d5c077b0610f46 · sha256:e2a6d0b34036b123… · /containers/cna/references/5
{"name":"https://github.com/symfony/symfony/security/advisories/GHSA-ph86-p8f6-f9r2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/symfony/symfony/security/advisories/GHSA-ph86-p8f6-f9r2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:40561faefa59c6feaf1dd6485d17559b7e3b36da218100a907d5c077b0610f46 · sha256:e2a6d0b34036b123… · /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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