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CVE-2026-47767

Sensiolabs Symfony vulnerability

9.8 CRITICALEPSS 0.72%
  1. Published14 Jul 2026

Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.46 until 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the CVE-2024-50340 fix gated runtime argv parsing on empty($_GET), but parse_str() and the web SAPI can disagree, allowing a crafted query string to leave $_GET empty while $_SERVER['argv'] still carries attacker-controlled --env or --no-debug flags that change APP_ENV or APP_DEBUG. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Sensiolabs Symfony≥ 5.4.46 < 5.4.52 · ≥ 6.4.14 < 6.4.40 · ≥ 7.1.7 < 7.4.12 · ≥ 8.0.0 < 8.0.12

Remediation

Fixed in
Sensiolabs Symfony≥ 5.4.52

References

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Frequently asked

Is CVE-2026-47767 being actively exploited?

CVE-2026-47767 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.72%.

How severe is CVE-2026-47767?

CVE-2026-47767 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.72% probability of exploitation.

Which products are affected by CVE-2026-47767?

Affected products include Sensiolabs Symfony.

How do I fix CVE-2026-47767?

Upgrade affected software to a fixed version, for example Sensiolabs Symfony 5.4.52 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-47767 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.