CVE-2026-5254Public exploitNetwork attack vector

Stored script execution via unsanitized webhook responses

Published Apr 1, 2026 · Updated Apr 1, 2026

Stored cross-site scripting in welovemedia FFmate 2.0.0 through 2.0.15 allows remote authenticated users to execute browser script. AppJsonTreeView.vue passes stored webhook-response strings through highlight() into Vue v-html without sanitization, turning attacker-controlled markup into executable HTML. Exploitation requires webhook configuration to a malicious endpoint and subsequent opening of the execution result; injected script runs within the FFmate web origin.

CVSS severity3.5
Low
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in welovemedia FFmate 2.0.0 through 2.0.15 allows remote authenticated users to execute browser script. AppJsonTreeView.vue passes stored webhook-response strings through highlight() into Vue v-html without sanitization, turning attacker-controlled markup into executable HTML. Exploitation requires webhook configuration to a malicious endpoint and subsequent opening of the execution result; injected script runs within the FFmate web origin.

The record

CVE
CVE-2026-5254
Published
Apr 1, 2026
Updated
Apr 1, 2026
Vendor
We Love Media
Product
FFmate
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=2.0.0
  2. Affected versionversion=2.0.1
  3. Affected versionversion=2.0.10
  4. Affected versionversion=2.0.11
  5. Affected versionversion=2.0.12
  6. Affected versionversion=2.0.13
  7. Affected versionversion=2.0.14
  8. Affected versionversion=2.0.15
  9. Affected versionversion=2.0.2
  10. Affected versionversion=2.0.3
  11. Affected versionversion=2.0.4
  12. Affected versionversion=2.0.5
  13. Affected versionversion=2.0.6
  14. Affected versionversion=2.0.7
  15. Affected versionversion=2.0.8
  16. Affected versionversion=2.0.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

We Love Media · FFmateversion=2.0.0; version=2.0.1; version=2.0.10; version=2.0.11; version=2.0.12; version=2.0.13; version=2.0.14; version=2.0.15; version=2.0.2; version=2.0.3; version=2.0.4; version=2.0.5; version=2.0.6; version=2.0.7; version=2.0.8; version=2.0.9

Published CVSS scores

3.5TenableCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
4.0TenableAV:N/AC:L/Au:S/C:N/I:P/A:N
5.1TenableCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript

Public exploit references

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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