CVE-2025-54789Network attack vector

Session JavaScript execution via unsanitized file moves

Published Aug 1, 2025 · Updated Aug 4, 2025

Reflected self-XSS in HumHub Files 0.16.9 and earlier allows remote authenticated users to execute JavaScript through file moves. The File Move flow reflects attacker-controlled move input into browser-rendered content without neutralizing script-related markup. A Files user must submit the crafted input and load the resulting response; code then runs within that same authenticated browser session.

CVSS severity5.1
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected self-XSS in HumHub Files 0.16.9 and earlier allows remote authenticated users to execute JavaScript through file moves. The File Move flow reflects attacker-controlled move input into browser-rendered content without neutralizing script-related markup. A Files user must submit the crafted input and load the resulting response; code then runs within that same authenticated browser session.

The record

CVE
CVE-2025-54789
Published
Aug 1, 2025
Updated
Aug 4, 2025
Vendor
HumHub GmbH & Co. KG
Product
Files
Classifications
CWE-80, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.6.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HumHub GmbH & Co. KG · Filesversion=< 0.6.10

Published CVSS scores

5.1GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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