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CVE-2026-54728

bunkerweb: Improper Input Validation and Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in BunkerWeb

MEDIUM
6.1
CVSS Score
Published: July 16, 2026 at 07:18 PM UTC
Updated: October 24, 2026 at 08:10 PM UTC
1 product affected across 1 vendorBunkerWeb

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

bunkerweb is an Open-source and next-generation Web Application Firewall (WAF). Prior to BunkerWeb 1.6.12 and BunkerWeb PRO 0.57, authenticated Host header handling in the BunkerWeb UI and API improperly validated and neutralized user-controlled input in a configuration-dependent path, allowing a low-privileged authenticated user to escalate privileges and affect confidentiality, integrity, and availability of the BunkerWeb instance. This issue is fixed in BunkerWeb version 1.6.12 and BunkerWeb PRO version 0.57.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

BunkerWeb· Bunkerity
90%
v < 1.6.12
Affected range stops below 1.6.12, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

x_refsource_CONFIRM
Source: cverecord
https://github.com/bunkerity/bunkerweb/security/advisories/GHSA-254j-92cv-m443
x_refsource_MISC
Source: cverecord
https://github.com/bunkerity/bunkerweb/commit/685ccbbe7d204132a843a7b7fd802d1bdb3f20a9
x_refsource_MISC
Source: cverecord
https://github.com/bunkerity/bunkerweb/releases/tag/v1.6.12

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-20CWE-74

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