CVE-2026-45065

MEDIUMNVD 6.12.3
EchelonGraph scoreLOW confidence

This low-severity CVE scores 2.3 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.0%, top 87% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:github_m, epss
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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, UrlGenerator validates route parameters against a pattern built as ^ plus the raw requirement plus $; with ungrouped alternations, middle alternatives match as unanchored substrings, allowing a value such as //evil.com to satisfy a common locale requirement and generate a protocol-relative off-site URL. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.

CVSS v3
6.1
EG Score
2.3(low)
EPSS
17.7%
KEV
Not listed

Published

May 27, 2026

Last Modified

July 15, 2026

Advisory Details (5)

Auto-updated Jul 15, 2026
Patch available. Sources: github_release, github.
github Patch Available

UrlGenerator Route-Requirement Bypass via Unanchored Regex Alternation → Off-Site //host URL Injection · Advisory · symfony/symfony · GitHub

https://github.com/symfony/symfony/security/advisories/GHSA-72xp-p242-47p9
github_release Patch Available

v8.0.12

Patch available: symfony/symfony v8.0.12

https://github.com/symfony/symfony/releases/tag/v8.0.12
github_release Patch Available

v7.4.12

Patch available: symfony/symfony v7.4.12

https://github.com/symfony/symfony/releases/tag/v7.4.12
github_release Patch Available

v6.4.40

Patch available: symfony/symfony v6.4.40

https://github.com/symfony/symfony/releases/tag/v6.4.40
github_release Patch Available

v5.4.52

Patch available: symfony/symfony v5.4.52

https://github.com/symfony/symfony/releases/tag/v5.4.52

Vendor Advisories for CVE-2026-45065(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
Packagist(2)
PackageVulnerable rangeFixed inDependents
symfony/routingv8.0.0 ... v8.0.9 (7 versions)8.0.12—
symfony/symfonyv8.0.0 ... v8.0.9 (12 versions)8.0.12—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 11× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-19 14:31 UTCEPSS rescore
  5. 2026-07-19 02:29 UTCEPSS rescore
  6. 2026-07-18 10:04 UTCEPSS rescore
  7. 2026-07-16 17:03 UTCEPSS rescore
  8. 2026-07-15 16:57 UTCEPSS rescore
  9. 2026-07-15 14:22 UTCNVD updateCVSS v3 → 6.1 · severity → MEDIUM
  10. 2026-07-14 18:07 UTCEG score recompute▲ 2.30
  11. 2026-07-14 18:05 UTCMITRE cvelistV5CVSS v3 → 2.3 · CVSS v4 → 2.3 · severity → LOW
  12. 2026-06-14 23:18 UTCEPSS rescore
  13. 2026-06-13 23:00 UTCEPSS rescore
  14. 2026-06-12 23:12 UTCEPSS rescore
  15. 2026-05-27 17:35 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-45065?
CVE-2026-45065 is a medium vulnerability published on May 27, 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, UrlGenerator validates route parameters against a pattern built as ^ plus the raw requirement plus $; with ungrouped alternations, middle alternatives match…
When was CVE-2026-45065 disclosed?
CVE-2026-45065 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45065 actively exploited?
CVE-2026-45065 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45065?
CVE-2026-45065 has a CVSS v3 base score of 6.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 2.3. The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-45065?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45065, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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