Is CVE-2026-48784 in the CISA KEV catalog?

No. CVE-2026-48784 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-48784?

CVE-2026-48784 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2026-48784?

CVE-2026-48784 has an EPSS score of 0.27% (19th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-48784?

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

CVE & CISA-KEV Catalog

CVE-2026-48784

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 5.4.53, 6.4.41, 7.4.13, and 8.0.13, UrlGenerator::doGenerate() used strtr() dot-segment encoding that skipped every other chained ../ or ./ segment, allowing attacker-controlled route parameters to generate URLs that collapse to a different path under RFC 3986 normalization. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13.

CWE-172 CWE-601Open Redirect

How to fix

Remediation Available

symfonyDebian

Fixed in:5.4.53+dfsg-0+deb12u1CVE-2026-48784

Fixed in:6.4.41+dfsg-0+deb13u1CVE-2026-48784

Fixed in:7.4.13+dfsg-1CVE-2026-48784

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

0.27%probability of exploitation in 30 days

19thpercentile

Low risk: more likely to be exploited than 19% of all known CVEs.

References

Patch2

Release Notes3

Related Vulnerabilities

Other CWE-172 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-10160	Critical	9.8	5.4%	-	Fix
CVE-2019-10153	Medium	5.0	2.2%	-	Fix
CVE-2018-7289	Low	3.3	1.8%	-	-
CVE-2019-12677	Medium	6.5	1.5%	-	Fix
CVE-2018-3777	Critical	9.8	1.5%	-	Fix
CVE-2016-6691	Critical	9.8	1.3%	-	-

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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.