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Vulnerability record · CVE-2026-21625 · published 16 January 2026

CVE-2026-21625: Stackideas easydiscuss unrestricted file upload vulnerability

Stackideas · Easydiscuss

User provided uploads to the Easy Discuss component for Joomla aren't properly validated. Uploads are purely checked by file extensions, no mime type checks are happening.

4.8 CVSS 4.0 Medium EPSS 0.39% · top 69.5% CWE-434 · Unrestricted file upload
4.8CVSS 4.0 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

User provided uploads to the Easy Discuss component for Joomla aren't properly validated. Uploads are purely checked by file extensions, no mime type checks are happening.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://stackideas.com/easydiscuss Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.4CVE-2026-21623Stackideas easydiscuss cross-site scripting vulnerabilityLack of input filterung leads to a persistent XSS vulnerability in the forum post handling of the Easy Discuss component for Joomla.EPSS 0.20%9.4CVE-2026-21624Stackideas easydiscuss cross-site scripting vulnerabilityLack of input filterung leads to a persistent XSS vulnerability in the user avatar text handling of the Easy Discuss component for Joomla.EPSS 0.20%9.2CVE-2026-21626Stackideas easydiscuss information exposure vulnerabilityAccess control settings for forum post custom fields are not applied to the JSON output type, leading to an ACL violation vector an information discl…EPSS 0.39%7.5CVE-2023-51810Stackideas easydiscuss sql injection vulnerabilitySQL injection vulnerability in StackIdeas EasyDiscuss v.5.0.5 and fixed in v.5.0.10 allows a remote attacker to obtain sensitive information via a cr…EPSS 1.1%5.4CVE-2018-5263Stackideas easydiscuss cross-site scripting vulnerabilityThe StackIdeas EasyDiscuss (aka com_easydiscuss) extension before 4.0.21 for Joomla! allows XSS.EPSS 1.6%10.0CVE-2026-56291Balbooa Forms Joomla extension unauthenticated arbitrary file upload RCEThe Balbooa Forms extension for Joomla before version 2.4.1 accepts file uploads without authentication and does not restrict file type, allowing exe…KEVEPSS 15%analysed10.0CVE-2026-48939iCagenda Joomla extension unrestricted file upload leads to PHP RCEThe iCagenda extension for Joomla fails to restrict file types in its file attachment feature, allowing arbitrary file uploads that result in PHP cod…KEVEPSS 20%analysed10.0CVE-2026-56290Joomla Page Builder CK unauthenticated file upload leads to RCEThe Joomla Page Builder CK extension before 3.6.0 allows unauthenticated arbitrary file uploads, letting an attacker place executable files on the se…KEVEPSS 31%analysed

Source: NIST National Vulnerability Database (record CVE-2026-21625), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.