HedgeDoc up to 1.10.5 SVG File /uploads/ cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in HedgeDoc up to 1.10.5. It has been declared as problematic. Affected is an unknown function of the file /uploads/ of the component SVG File Handler. Executing a manipulation can lead to cross site scripting. This vulnerability appears as CVE-2026-25642. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in HedgeDoc up to 1.10.5. This vulnerability affects some unknown processing of the file /uploads/ of the component SVG File Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes:

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.6, files served below the /uploads/ endpoint did not use a more strict security-policy. This resulted in a too open Content-Security-Policy and furthermore opened the possibility to host malicious interactive web content (such as fake login forms) using SVG files. This vulnerability is fixed in 1.10.6.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-25642 since 02/04/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 1.10.6 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 74daa0e7a1cbfafd9aeb255eaf064dfe47cd401c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-5588). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔒

CNA Base Score: 4.3
CNA Vector (GitHub_M): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: HedgeDoc 1.10.6
Patch: 74daa0e7a1cbfafd9aeb255eaf064dfe47cd401c

Timelineinfo

02/04/2026 CVE reserved
02/06/2026 +2 days Advisory disclosed
02/06/2026 +0 days VulDB entry created
02/26/2026 +20 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-x74j-jmf9-534w
Status: Confirmed

CVE: CVE-2026-25642 (🔒)
GCVE (CVE): GCVE-0-2026-25642
GCVE (VulDB): GCVE-100-344728
EUVD: 🔒

Entryinfo

Created: 02/06/2026 21:24
Updated: 02/26/2026 13:51
Changes: 02/06/2026 21:24 (68), 02/07/2026 13:18 (1), 02/26/2026 13:51 (11)
Complete: 🔍
Cache ID: 216:281:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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