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6 vulnerabilities found for myBB forums by Mybb
CVE-2023-53978 (GCVE-0-2023-53978)
Vulnerability from nvd – Published: 2025-12-22 21:35 – Updated: 2026-04-07 14:08
VLAI
Title
myBB Forums 1.8.26 Stored Cross-Site Scripting via Forum Announcements
Summary
myBB Forums 1.8.26 contains a stored cross-site scripting vulnerability in the forum announcement system that allows authenticated administrators to inject malicious scripts when creating announcements. Attackers can exploit this vulnerability by inserting script payloads in the announcement title field when adding announcements through the 'Forums and Posts' > 'Forum Announcements' interface, causing arbitrary JavaScript to execute when the announcement is displayed on the forum.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/51136 | exploit |
| https://mybb.com/ | product |
| https://www.vulncheck.com/advisories/mybb-forums-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mybb | myBB forums |
Affected:
1.8.26
|
Date Public
2023-03-30 00:00
Credits
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CVE-2023-53977 (GCVE-0-2023-53977)
Vulnerability from nvd – Published: 2025-12-22 21:35 – Updated: 2026-04-07 14:08
VLAI
Title
myBB Forums 1.8.26 Stored Cross-Site Scripting via Forum Management
Summary
myBB Forums 1.8.26 contains a stored cross-site scripting vulnerability in the forum management system that allows authenticated administrators to inject malicious scripts when creating new forums. Attackers can exploit this vulnerability by inserting script payloads in the forum title field when adding new forums through the 'Forums and Posts' > 'Forum Management' interface, causing arbitrary JavaScript to execute when the forum listing is viewed.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/51136 | exploit |
| https://mybb.com/ | product |
| https://www.vulncheck.com/advisories/mybb-forums-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mybb | myBB forums |
Affected:
1.8.26
|
Date Public
2023-03-30 00:00
Credits
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CVE-2023-53976 (GCVE-0-2023-53976)
Vulnerability from nvd – Published: 2025-12-22 21:35 – Updated: 2026-04-07 14:08
VLAI
Title
myBB Forums 1.8.26 Stored Cross-Site Scripting via Template Management
Summary
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.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/51136 | exploit |
| https://mybb.com/ | product |
| https://www.vulncheck.com/advisories/mybb-forums-… | third-party-advisory |
| https://www.cve.org/CVERecord?id=CVE-2021-41866 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mybb | myBB forums |
Affected:
1.8.26
|
Date Public
2023-03-30 00:00
Credits
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CVE-2023-53978 (GCVE-0-2023-53978)
Vulnerability from cvelistv5 – Published: 2025-12-22 21:35 – Updated: 2026-04-07 14:08
VLAI
Title
myBB Forums 1.8.26 Stored Cross-Site Scripting via Forum Announcements
Summary
myBB Forums 1.8.26 contains a stored cross-site scripting vulnerability in the forum announcement system that allows authenticated administrators to inject malicious scripts when creating announcements. Attackers can exploit this vulnerability by inserting script payloads in the announcement title field when adding announcements through the 'Forums and Posts' > 'Forum Announcements' interface, causing arbitrary JavaScript to execute when the announcement is displayed on the forum.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/51136 | exploit |
| https://mybb.com/ | product |
| https://www.vulncheck.com/advisories/mybb-forums-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mybb | myBB forums |
Affected:
1.8.26
|
Date Public
2023-03-30 00:00
Credits
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CVE-2023-53977 (GCVE-0-2023-53977)
Vulnerability from cvelistv5 – Published: 2025-12-22 21:35 – Updated: 2026-04-07 14:08
VLAI
Title
myBB Forums 1.8.26 Stored Cross-Site Scripting via Forum Management
Summary
myBB Forums 1.8.26 contains a stored cross-site scripting vulnerability in the forum management system that allows authenticated administrators to inject malicious scripts when creating new forums. Attackers can exploit this vulnerability by inserting script payloads in the forum title field when adding new forums through the 'Forums and Posts' > 'Forum Management' interface, causing arbitrary JavaScript to execute when the forum listing is viewed.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/51136 | exploit |
| https://mybb.com/ | product |
| https://www.vulncheck.com/advisories/mybb-forums-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mybb | myBB forums |
Affected:
1.8.26
|
Date Public
2023-03-30 00:00
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CVE-2023-53976 (GCVE-0-2023-53976)
Vulnerability from cvelistv5 – Published: 2025-12-22 21:35 – Updated: 2026-04-07 14:08
VLAI
Title
myBB Forums 1.8.26 Stored Cross-Site Scripting via Template Management
Summary
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.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/51136 | exploit |
| https://mybb.com/ | product |
| https://www.vulncheck.com/advisories/mybb-forums-… | third-party-advisory |
| https://www.cve.org/CVERecord?id=CVE-2021-41866 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mybb | myBB forums |
Affected:
1.8.26
|
Date Public
2023-03-30 00:00
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