CVE-2026-24739Hinoki check available

Destructive file operations via unquoted MSYS2-sensitive arguments

Published Jan 28, 2026 · Updated Jan 28, 2026

Argument injection in the Symfony Process component allows local users to delete unintended Windows paths through MSYS2 conversion. Process::escapeArgument omits equals signs and other MSYS2-sensitive characters from its special-character test, leaving affected path arguments unquoted before native Windows executables receive them. Exploitation requires PHP to run under an MSYS2-based shell, user-influenced process arguments, and a file-management command; argument corruption can redirect deletion to a broader directory or drive.

CVSS severity6.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Argument injection in the Symfony Process component allows local users to delete unintended Windows paths through MSYS2 conversion. Process::escapeArgument omits equals signs and other MSYS2-sensitive characters from its special-character test, leaving affected path arguments unquoted before native Windows executables receive them. Exploitation requires PHP to run under an MSYS2-based shell, user-influenced process arguments, and a file-management command; argument corruption can redirect deletion to a broader directory or drive.

The record

CVE
CVE-2026-24739
Published
Jan 28, 2026
Updated
Jan 28, 2026
Vendor
Symfony
Product
Symfony
Classifications
CWE-88
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 5.4.51
  2. Affected versionversion=>= 6.4.0, < 6.4.33
  3. Affected versionversion=>= 7.3.0, < 7.3.11
  4. Affected versionversion=>= 7.4.0, < 7.4.5
  5. Affected versionversion=>= 8.0.0 , < 8.0.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Symfony · Symfonyversion=< 5.4.51; version=>= 6.4.0, < 6.4.33; version=>= 7.3.0, < 7.3.11; version=>= 7.4.0, < 7.4.5; version=>= 8.0.0 , < 8.0.5

Published CVSS scores

6.3GitHubCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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