Is CVE-2026-45065 in the CISA KEV catalog?

No. CVE-2026-45065 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-45065?

CVE-2026-45065 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2026-45065?

CVE-2026-45065 has an EPSS score of 0.26% (18th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-45065?

Upgrade symfony on debian 12 to 5.4.53+dfsg-0+deb12u1 or later.

CVE & CISA-KEV Catalog

CVE-2026-45065

MEDIUM

6.1

CVSS v3

NVD

Description

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.

CWE-185 CWE-601Open Redirect

How to fix

Remediation Available

symfonyDebian

Fixed in:5.4.53+dfsg-0+deb12u1CVE-2026-45065

Fixed in:6.4.41+dfsg-0+deb13u1CVE-2026-45065

Fixed in:7.4.12+dfsg-1CVE-2026-45065

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploit Intelligence

0.26%probability of exploitation in 30 days

18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Patch1

github.com

Release Notes4

Related Vulnerabilities

Other CWE-185 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11034	Medium	6.1	7.6%	-	Fix
CVE-2015-8388	High	7.5	6.6%	-	Fix
CVE-2018-7536	Medium	5.3	4.6%	-	Fix
CVE-2018-7537	Medium	5.3	4.5%	-	Fix
CVE-2015-8389	Critical	9.8	3.9%	-	Fix
CVE-2018-7158	High	7.5	3.4%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.