CVE-2026-11511Network attack vector

HTML injection via crafted style attribute

Published Jun 8, 2026 · Updated Jun 8, 2026

HTML injection in Bolt CMS 3.7.0 through 3.7.5 allows remote authenticated users to alter rendered content via a crafted style argument. The public record identifies src/Storage/Field/Type/TextType.php but does not disclose which method fails to neutralize HTML-significant style content. Exploitation requires low-privileged access and another user to view the affected output; the bounded result is unauthorized modification of rendered content.

CVSS severity3.5
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTML injection in Bolt CMS 3.7.0 through 3.7.5 allows remote authenticated users to alter rendered content via a crafted style argument. The public record identifies src/Storage/Field/Type/TextType.php but does not disclose which method fails to neutralize HTML-significant style content. Exploitation requires low-privileged access and another user to view the affected output; the bounded result is unauthorized modification of rendered content.

The record

CVE
CVE-2026-11511
Published
Jun 8, 2026
Updated
Jun 8, 2026
Vendor
Bolt CMS
Product
Bolt CMS
Classifications
CWE-74, CWE-80
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.7.0
  2. Affected versionversion=3.7.1
  3. Affected versionversion=3.7.2
  4. Affected versionversion=3.7.3
  5. Affected versionversion=3.7.4
  6. Affected versionversion=3.7.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Bolt CMS · Bolt CMSversion=3.7.0; version=3.7.1; version=3.7.2; version=3.7.3; version=3.7.4; version=3.7.5

Published CVSS scores

2.0VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
3.6VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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