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Permalink CVE-2026-43621
8.6 HIGH
  • CVSS version (CVSS): 4.0
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Attack Requirement (AT): None (N)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): None (N)
  • Vulnerable System Impact Confidentiality (VC): High (H)
  • Vulnerable System Impact Integrity (VI): High (H)
  • Vulnerable System Impact Availability (VA): None (N)
  • Subsequent System Impact Confidentiality (SC): None (N)
  • Subsequent System Impact Integrity (SI): None (N)
  • Subsequent System Impact Availability (SA): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Attack Requirement (MAT): None (N)
  • Modified Privileges Required (MPR): Low (L)
  • Modified User Interaction (MUI): None (N)
  • Modified Vulnerable System Impact Confidentiality (MVC): High (H)
  • Modified Vulnerable System Impact Integrity (MVI): High (H)
  • Modified Vulnerable System Impact Availability (MVA): None (N)
  • Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
  • Modified Subsequent System Impact Integrity (MSI): Negligible (N)
  • Modified Subsequent System Impact Availability (MSA): Negligible (N)
  • Safety (S): Not Defined (X)
  • Automatable (AU): Not Defined (X)
  • Recovery (R): Not Defined (X)
  • Value Density (V): Not Defined (X)
  • Vulnerability Response Effort (RE): Not Defined (X)
  • Provider Urgency (U): Not Defined (X)
  • Confidentiality Req. (CR): Not Defined (X)
  • Integrity Req. (IR): Not Defined (X)
  • Availability Req. (AR): Not Defined (X)
  • Exploit Maturity (E): Not Defined (X)
created 3 days, 4 hours ago Activity log
  • Created suggestion 3 days, 4 hours ago
Simple Machines Forum < 2.1.7 Authorization Confusion via Profile::load()

Simple Machines Forum (SMF) through 2.1.7, fixed in commit 6f0dc61, contains an authorization state-confusion vulnerability in the profile loader that allows authenticated low-privileged users to gain administrator access by supplying multiple values for the user parameter. Attackers can exploit the mismatch between Profile::$member and User::$me->is_owner during sequential profile loading to be treated as the owner of an administrator profile, enabling unauthorized password changes and full account takeover.

Affected products

SMF
  • =<2.1.7
  • ==6f0dc61958aa86a4b436a222f6176812ed5bbb95

Matching in nixpkgs

pkgs.smfh

Sleek Manifest File Handler

  • nixos-unstable 1.5
    • nixpkgs-unstable 1.6
    • nixos-unstable-small 1.7.1
  • nixos-26.05 1.5
    • nixos-26.05-small 1.5
    • nixpkgs-26.05-darwin 1.5

pkgs.libsmf

C library for reading and writing Standard MIDI Files

  • nixos-unstable 1.3
    • nixpkgs-unstable 1.3
    • nixos-unstable-small 1.3
  • nixos-26.05 1.3
    • nixos-26.05-small 1.3
    • nixpkgs-26.05-darwin 1.3

pkgs.free5gc-smf

Open source 5G core network based on 3GPP R15

  • nixos-unstable -
    • nixos-unstable-small 1.4.5

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