Emlog up to 2.6.2 Query String tag_model.php updateTagName sql injection

Summaryinfo

A vulnerability classified as critical has been found in Emlog up to 2.6.2. This issue affects the function updateTagName of the file include/model/tag_model.php of the component Query String Handler. This manipulation causes sql injection. The identification of this vulnerability is CVE-2026-34788. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Emlog up to 2.6.2. Affected by this vulnerability is the function updateTagName of the file include/model/tag_model.php of the component Query String Handler. The manipulation with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Emlog is an open source website building system. In versions 2.6.2 and prior, a SQL injection vulnerability exists in include/model/tag_model.php at line 168. The updateTagName() function directly interpolates user input into the SQL query string without using parameterized queries or proper escaping ($this->db->escape_string()), making it vulnerable to SQL injection attacks. At time of publication, there are no publicly available patches.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-34788 since 03/30/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/04/2026). MITRE ATT&CK project uses the attack technique T1505 for this issue.

By approaching the search of inurl:include/model/tag_model.php it is possible to find vulnerable targets with Google Hacking.

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

Website

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

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

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