Emlog up to 2.6.29 cross site scripting

Summaryinfo

A vulnerability marked as problematic has been reported in Emlog up to 2.6.29. This affects an unknown part. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-53758. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Emlog up to 2.6.29 and classified as problematic. This issue affects an unknown code. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

Emlog is an open source website building system. In versions 2.6.29 and prior, article content is processed by Parsedown without enabling safe mode, which means raw HTML including <script> tags embedded in Markdown is passed through unescaped. The output is rendered with no additional sanitization, resulting in stored XSS visible to all site visitors. At time of publication, there are no publicly known patches.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-53758 since 06/10/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Emlog

Version

• 2.6.0
• 2.6.1
• 2.6.2
• 2.6.3
• 2.6.4
• 2.6.5
• 2.6.6
• 2.6.7
• 2.6.8
• 2.6.9
• 2.6.10
• 2.6.11
• 2.6.12
• 2.6.13
• 2.6.14
• 2.6.15
• 2.6.16
• 2.6.17
• 2.6.18
• 2.6.19
• 2.6.20
• 2.6.21
• 2.6.22
• 2.6.23
• 2.6.24
• 2.6.25
• 2.6.26
• 2.6.27
• 2.6.28
• 2.6.29

Website

• Product: https://github.com/emlog/emlog/

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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