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Vulnerabilities

Vulnerability · CVE-2026-29048

HumHub is an Open Source Enterprise Social Network.

Published Mar 6, 2026 · catalog updated Jun 17, 2026 · HumHub is an Open

Check if you run it

No confirmed exploitation is on record for CVE-2026-29048. EPSS is 0.34%. Act only if a listed version of HumHub is an Open is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (HumHub is an Open).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.34%
Remediation
Advisory link
Affected products
cpe humhub/humhub

HumHub is an Open Source Enterprise Social Network. In version 1.18.0, a cross-site scripting vulnerability was identified in the Button component of version 1.18.0. Due to inconsistent output encoding at several points within the software, malicious scripts could be injected and executed in the context of the user's browser. This issue has been patched in version 1.18.1.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe humhub/humhub1.18.0

How to fix CVE-2026-29048

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-29048. EPSS is 0.34%. Act only if a listed version of HumHub is an Open is installed.

Which versions are affected?

Compare what you have installed with 1.18.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 6, 2026 · NIST NVD

    Detected

    HumHub is an Open Source Enterprise Social Network. In version 1.18.0, a cross-site scripting vulnerability was identified in the Button component of version 1.18.0. Due to inconsistent output encoding at several points within the software, malicious scripts could be injected and executed in the context of the user's browser. This issue has been patched in version 1.18.1.

  2. Jun 17, 2026 · NIST NVD

    Updated

    HumHub is an Open Source Enterprise Social Network. In version 1.18.0, a cross-site scripting vulnerability was identified in the Button component of version 1.18.0. Due to inconsistent output encoding at several points within the software, malicious scripts could be injected and executed in the context of the user's browser. This issue has been patched in version 1.18.1.

Sources

  • CVE.orgVulnerability recordCVE-2026-29048

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-29048

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-29048

    HumHub is an Open Source Enterprise Social Network. In version 1.18.0, a cross-site scripting vulnerability was identified in the Button component of version 1.18.0. Due to inconsistent output encoding at several points within the software, malicious scripts could be injected and

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.