VulnSocial

CVE-2026-100909

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A vulnerability was found in OctoberCMS up to 4.1.19/4.2.25/4.3.4. The impacted element is the function getSourcePathForResize of the file modules/system/classes/ResizeImages.php. The manipulation of the argument realSourcePath results in server-side request forgery. The attack may be performed from remote. The exploit has been made public and could be used. Upgrading to version 4.3.5 and 4.4.0 is sufficient to resolve this issue. The patch is identified as 0e9736aa2c6d6bd3d60ff6ef9e0b4d32ce387f58. The affected component should be upgraded.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-918

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-10-18: 110-18
Full discourse1 post
  • DFIR Lab@DFIR_Lab

    🚨 HIGH: CVE-2026-100909 - OctoberCMS SSRF vulnerability (CVSS 7.3) Affected: v4.1.19/4.2.25/4.3.4 and below Exploit: Public Fix: Upgrade to v4.3.5 or v4.4.0 #CVE #Vulnerability #PatchNow #ThreatIntel https://t.co/mg7wIjG5GL

    0000028
    150 followersView on X

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