CVE-2024-50340 (GCVE-0-2024-50340)

Vulnerability from cvelistv5 – Published: 2024-11-06 21:09 – Updated: 2024-11-07 15:29
VLAI Shadowserver Previdian
Title
Ability to change environment from query in symfony/runtime
Summary
symfony/runtime is a module for the Symphony PHP framework which enables decoupling PHP applications from global state. When the `register_argv_argc` php directive is set to `on` , and users call any URL with a special crafted query string, they are able to change the environment or debug mode used by the kernel when handling the request. As of versions 5.4.46, 6.4.14, and 7.1.7 the `SymfonyRuntime` now ignores the `argv` values for non-SAPI PHP runtimes. All users are advised to upgrade. There are no known workarounds for this vulnerability.
Severity
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-07 15:27 UTC
CWE
  • CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7761 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
symfony symfony Affected: < 5.4.46
Affected: >= 6.0.0, < 6.4.14
Affected: >= 7.0.0, < 7.1.7
guessed Create a notification for this product.
sensiolabs symfony Affected: 0 , < 5.4.46 (custom)
Affected: 6.0.0 , < 6.4.14 (custom)
Affected: 7.0.0 , < 7.1.7 (custom)
    cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
Create a notification for this product.
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 6259c51d-5aa2-4f8f-b808-6f64c2b446f1

Vulnerability ID: CVE-2024-50340

Status: Confirmed

Status Updated: 2026-10-22 00:00 UTC

Exploited: Yes

Characteristics
Severity: 73.0
Timestamps
First Seen: 2026-09-10
Asserted: 2026-09-10
Last Seen: 2026-10-22
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Symfony / Symfony | Class: web-app-framework | Severity: High (CVSS 7.3) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-10-22: 1
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class web-app-framework
7D Avg 2
Vendor Symfony
30D Avg 0
90D Avg 0
Product Symfony
Cisa Kev no
Connections 1
Observation Date 2026-10-22
Vulnerability Class CVSS
Vulnerability Score 7.3
Vulnerability Severity High
References
Created: 2026-10-21 08:50 UTC | Updated: 2026-10-24 01:01 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 737d80a1-2c10-486f-9282-3d667451f149

Vulnerability ID: CVE-2024-50340

Status: Confirmed

Status Updated: 2026-09-10 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-09-10
Asserted: 2026-09-10
Scope
Notes: Ability to change environment from query in symfony/runtime | Affected: Symfony / symfony | CVSS: 7.3 (HIGH) | EPSS: 0.64429 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title Ability to change environment from query in symfony/runtime
Cve Id CVE-2024-50340
Vendor Symfony
Ghsa Id None
Product symfony
Added Date 2026-09-10T00:00:00.000Z
Cvss Score 7.3
Epss Score 0.64429
Previous Ids
Cvss Severity HIGH
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.99185
Used In Malware unknown
Vulnerability Id CVE-2024-50340
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-09-11 11:00 UTC | Updated: 2026-09-11 11:00 UTC
Show details on NVD website
To clipboard 

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  }
}



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Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.