Stackideas EasyDiscuss Extension up to 5.0.15 on Joomla unrestricted upload

Summaryinfo

A vulnerability, which was classified as critical, was found in Stackideas EasyDiscuss Extension up to 5.0.15 on Joomla. Impacted is an unknown function. Such manipulation leads to unrestricted upload. This vulnerability is listed as CVE-2026-21625. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Stackideas EasyDiscuss Extension up to 5.0.15 on Joomla. Affected by this issue is some unknown functionality. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was presented by simoni. This vulnerability is handled as CVE-2026-21625 since 01/01/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/31/2026). The MITRE ATT&CK project declares the attack technique as T1608.002.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-2937). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Joomla Component

Vendor

• Stackideas

Name

• EasyDiscuss Extension

Version

• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.0.8
• 5.0.9
• 5.0.10
• 5.0.11
• 5.0.12
• 5.0.13
• 5.0.14
• 5.0.15

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

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