CVE-2021-43847

MEDIUM
Published Dec 20, 20214y ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Dec 20, 2021 4y ago
Last Modified Jun 17, 2026 2w ago

Description

HumHub is an open-source social network kit written in PHP. Prior to HumHub version 1.10.3 or 1.9.3, it could be possible for registered users to become unauthorized members of private Spaces. Versions 1.10.3 and 1.9.3 contain a patch for this issue.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-285
CWE-862 Missing Authorization Authorization

Affected Products 2

VendorProductVersionRange
humhubhumhub* <1.9.3
humhubhumhub*≥1.10.0  –  <1.10.3

References 5

  • github.com https://github.com/humhub/humhub/pull/5473
    PatchThird Party Advisory
  • github.com https://github.com/humhub/humhub/releases/tag/v1.10.3
    Release NotesThird Party Advisory
  • github.com https://github.com/humhub/humhub/releases/tag/v1.9.3
    Release NotesThird Party Advisory
  • github.com https://github.com/humhub/humhub/security/advisories/GHSA-f5hc-5wfr-7v74
    ExploitThird Party Advisory
  • huntr.dev https://huntr.dev/bounties/943dad83-f0ed-4c74-ba81-7dfce7ca0ef2/
    ExploitIssue TrackingPatchThird Party Advisory

Remediation

  • github.com https://github.com/humhub/humhub/pull/5473
    PatchThird Party Advisory
  • huntr.dev https://huntr.dev/bounties/943dad83-f0ed-4c74-ba81-7dfce7ca0ef2/
    ExploitIssue TrackingPatchThird Party Advisory