Answer in brief
CVE-2026-45074 records a High severity (CVSS 8.1) vulnerability in Symfony: Cas2Handler Derives CAS service URL from Client Host Header → Cross-Service Ticket Replay. The current sources do not mark it as known exploited. The current feed maps symfony/security-http (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 8.1. 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/security-http (generic), symfony/symfony (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| symfony/security-httpgeneric | >= 7.1.0-BETA1, < 7.4.12 || >= 8.0.0-BETA1, < 8.0.12 | Not reported |
| symfony/symfonygeneric | >= 7.1.0-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 15, 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. From 7.1.0 until 7.4.12 and 8.0.12, Cas2Handler builds the CAS service parameter from Request::getSchemeAndHttpHost(), which reflects an attacker-controlled Host header when framework.trusted_hosts is not configured; an attacker controlling another application registered with the same CAS server can replay a victim ticket against the Symfony application and authenticate as the victim. This issue is fixed in versions 7.4.12 and 8.0.12.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-45074 records a High severity (CVSS 8.1) vulnerability in Symfony: Cas2Handler Derives CAS service URL from Client Host Header → Cross-Service Ticket Replay. The current sources do not mark it as known exploited. The current feed maps symfony/security-http (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 8.1. 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/security-http (generic), symfony/symfony (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| symfony/security-httpgeneric | >= 7.1.0-BETA1, < 7.4.12 || >= 8.0.0-BETA1, < 8.0.12 | Not reported |
| symfony/symfonygeneric | >= 7.1.0-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 15, 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. From 7.1.0 until 7.4.12 and 8.0.12, Cas2Handler builds the CAS service parameter from Request::getSchemeAndHttpHost(), which reflects an attacker-controlled Host header when framework.trusted_hosts is not configured; an attacker controlling another application registered with the same CAS server can replay a victim ticket against the Symfony application and authenticate as the victim. This issue is fixed in versions 7.4.12 and 8.0.12.
Quoted source text, attributed separately from HOL analysis.