Answer in brief
CVE-2026-45070 records a Medium severity (CVSS 6.5) vulnerability in Symfony: Email Header Injection via Non-Token Characters in Mime Parameter Names. The current sources do not mark it as known exploited. The current feed maps symfony/mime (generic), symfony/symfony (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps symfony/mime (generic), symfony/symfony (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| symfony/mimegeneric | < 5.4.52 || >= 6.0.0-BETA1, < 6.4.40 || >= 7.0.0-BETA1, < 7.4.12 || >= 8.0.0-BETA1, < 8.0.12 | Not reported |
| symfony/symfonygeneric | < 5.4.52 || >= 6.0.0-BETA1, < 6.4.40 || >= 7.0.0-BETA1, < 7.4.12 || >= 8.0.0-BETA1, < 8.0.12 | Not reported |
Published upstream
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
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 issue is reported as fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-45070 records a Medium severity (CVSS 6.5) vulnerability in Symfony: Email Header Injection via Non-Token Characters in Mime Parameter Names. The current sources do not mark it as known exploited. The current feed maps symfony/mime (generic), symfony/symfony (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps symfony/mime (generic), symfony/symfony (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| symfony/mimegeneric | < 5.4.52 || >= 6.0.0-BETA1, < 6.4.40 || >= 7.0.0-BETA1, < 7.4.12 || >= 8.0.0-BETA1, < 8.0.12 | Not reported |
| symfony/symfonygeneric | < 5.4.52 || >= 6.0.0-BETA1, < 6.4.40 || >= 7.0.0-BETA1, < 7.4.12 || >= 8.0.0-BETA1, < 8.0.12 | Not reported |
Published upstream
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
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 issue is reported as fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
Quoted source text, attributed separately from HOL analysis.