VDB-369131 · Submit #836106 · CVE-2026-11511

Bolt CMS up to 3.7.5 HTML Attribute TextType.php style HTML injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Bolt CMS up to 3.7.5. It has been rated as problematic. This issue affects some unknown processing of the file src/Storage/Field/Type/TextType.php of the component HTML Attribute Handler. The manipulation of the argument style leads to HTML injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is documented as CVE-2026-11511. The attack can be initiated remotely. Additionally, an exploit exists. The GitHub repository was archived by the owner and is now read-only.

Detailsinfo

A vulnerability was found in Bolt CMS up to 3.7.5 and classified as problematic. This issue affects an unknown function of the file src/Storage/Field/Type/TextType.php of the component HTML Attribute Handler. The manipulation of the argument style with an unknown input leads to a html injection vulnerability. Using CWE to declare the problem leads to CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. Impacted is integrity.

The identification of this vulnerability is CVE-2026-11511. 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. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

It is declared as proof-of-concept. The GitHub repository was archived by the owner and is now read-only. By approaching the search of inurl:src/Storage/Field/Type/TextType.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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-35059). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Content Management System

Vendor

Bolt

Name

Version

Support

end of life

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.5
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: HTML injection
CWE: CWE-80 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/07/2026 Advisory disclosed
06/07/2026 +0 days VulDB entry created
06/08/2026 +1 days VulDB entry last update

Sourcesinfo

Status: Not defined

CVE: CVE-2026-11511 (🔒)
GCVE (CVE): GCVE-0-2026-11511
GCVE (VulDB): GCVE-100-369131
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/07/2026 17:50
Updated: 06/08/2026 17:31
Changes: 06/07/2026 17:50 (57), 06/08/2026 17:31 (1)
Complete: 🔍
Submitter: geochen
Cache ID: 216::103

Submitinfo

Accepted

Submit #836106: bolt bolt-cms 3.7.5 Improper Neutralization of Script in Attributes in a Web Page (by geochen)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.