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CVE Vulnerability Details :
CVE-2023-53976
PUBLISHED
More InfoOfficial Page
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
View Known Exploited Vulnerability (KEV) details
Published At-22 Dec, 2025 | 21:35
Updated At-07 Apr, 2026 | 14:08
Rejected At-
▼CVE Numbering Authority (CNA)
myBB Forums 1.8.26 Stored Cross-Site Scripting via Template Management

myBB Forums 1.8.26 contains a stored cross-site scripting vulnerability in the template management system that allows authenticated administrators to inject malicious scripts when creating new templates. Attackers can exploit this vulnerability by inserting script payloads in the template title field when adding new templates through the 'Templates and Style' > 'Templates' > 'Manage Templates' > 'Global Templates' interface, causing arbitrary JavaScript to execute when the template is viewed.

Affected Products
Vendor
MyBBMybb
Product
myBB forums
Versions
Affected
  • 1.8.26
Problem Types
TypeCWE IDDescription
CWECWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Type: CWE
CWE ID: CWE-79
Description: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Metrics
VersionBase scoreBase severityVector
4.05.1MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Version: 4.0
Base score: 5.1
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Andrey Stoykov
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.exploit-db.com/exploits/51136
exploit
https://mybb.com/
product
https://www.vulncheck.com/advisories/mybb-forums-stored-cross-site-scripting-via-template-management
third-party-advisory
Hyperlink: https://www.exploit-db.com/exploits/51136
Resource:
exploit
Hyperlink: https://mybb.com/
Resource:
product
Hyperlink: https://www.vulncheck.com/advisories/mybb-forums-stored-cross-site-scripting-via-template-management
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.cve.org/CVERecord?id=CVE-2021-41866
N/A
Hyperlink: https://www.cve.org/CVERecord?id=CVE-2021-41866
Resource: N/A
Details not found