Mereithhh VanBlog up to 0.54.0 Image Upload Endpoint access.ts cross site scripting

Summaryinfo

A vulnerability was found in Mereithhh VanBlog up to 0.54.0. It has been rated as problematic. This vulnerability affects unknown code of the file packages/server/src/types/access/access.ts of the component Image Upload Endpoint. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-129259. The attack is possible to be carried out remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Mereithhh VanBlog up to 0.54.0 and classified as problematic. This issue affects an unknown function of the file packages/server/src/types/access/access.ts of the component Image Upload Endpoint. 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 advisory is shared at note.geronimo.xin. The identification of this vulnerability is CVE-2026-129259. 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. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The exploit is available at note.geronimo.xin. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

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

Vendor

• Mereithhh

Name

• VanBlog

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33
• 0.34
• 0.35
• 0.36
• 0.37
• 0.38
• 0.39
• 0.40
• 0.41
• 0.42
• 0.43
• 0.44
• 0.45
• 0.46
• 0.47
• 0.48
• 0.49
• 0.50
• 0.51
• 0.52
• 0.53
• 0.54.0

CPE 2.3info

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CPE 2.2info

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CVSSv4info

CVSSv3info

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Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #1043136: Mereithhh VanBlog 0.54.0 Cross-Site Scripting (by Geronimo)

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

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