CVE-2021-43847

Public Exploit
Authorization Bypass in Space Invite in HumHub

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.

Categories

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.32%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory huntr.dev
Affected: humhub humhub
Published at:
Updated at:

References

Link Tags
https://github.com/humhub/humhub/security/advisories/GHSA-f5hc-5wfr-7v74 third party advisory exploit
https://github.com/humhub/humhub/pull/5473 third party advisory patch
https://github.com/humhub/humhub/releases/tag/v1.10.3 third party advisory release notes
https://github.com/humhub/humhub/releases/tag/v1.9.3 third party advisory release notes
https://huntr.dev/bounties/943dad83-f0ed-4c74-ba81-7dfce7ca0ef2/ patch exploit third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2021-43847?
CVE-2021-43847 has been scored as a medium severity vulnerability.
How to fix CVE-2021-43847?
To fix CVE-2021-43847, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-43847 being actively exploited in the wild?
It is possible that CVE-2021-43847 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-43847?
CVE-2021-43847 affects humhub humhub.
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