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TI-2026-02544 Aliases CVE-2026-2952GHSA-fwf8-cx3q-ch9g

Vaelsys HTTP POST Request tree_server.php os command injection

Priority HIGH 70CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

A flaw has been found in Vaelsys 4.1.0. This vulnerability affects unknown code of the file /tree/tree_server.php of the component HTTP POST Request Handler. This manipulation of the argument xajaxargs causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.08374 95th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Vaelsys4.1.0—No fix listedCNA
  • Vaelsys Vendor— Affected 4.1.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:vaelsys:vaelsys:4.1.0:*:*:*:*:*:*:*4.1.0VulnerableVaelsys
  • cpe:2.3:a:vaelsys:vaelsys:4.1.0:*:*:*:*:*:*:* Versions 4.1.0 Vulnerable ·Vaelsys

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-2952
  2. 2026-10-03 Alias added: GHSA-fwf8-cx3q-ch9g
  3. 2026-11-07 EPSS moved to the 95th–99th percentile

References

Exploit 1

  • TI-2025-07561 Vaelsys VaelsysV4 User Creation vgrid_server.php improper authorization CVSS 4.0MEDIUM 6.9
  • TI-2025-07559 Vaelsys VaelsysV4 Web interface vgrid_server.php execute_DataObjectProc os command injection CVSS 4.0MEDIUM 6.9
  • TI-2025-07560 Vaelsys VaelsysV4 Web interface vgrid_server.php weak hash CVSS 4.0LOW 2.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences