Which products and versions are affected by CVE-2018-17128?

Affected: Mybb. The full list is in the CVE brief.

Is CVE-2018-17128 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2018-17128 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2018-17128?

Public exploit code is available.

Is there a fix for CVE-2018-17128?

Fixed versions are available, including Mybb 1.8.19.

How urgently should CVE-2018-17128 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2018-17128

MediumPublic exploit

A Persistent XSS issue was discovered in the Visual Editor in MyBB before 1.8.19 via a Video MyCode.

Published Sep 17, 2018 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2018-17128 is a medium-severity vulnerability (CVSS 5.4 v3) affecting Mybb.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 75% probability of exploitation in the next 30 days.
Fixed versions are available, including Mybb 1.8.19.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3

5.4

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS (30-day exploit likelihood)

75%

Higher than 99.5% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2018-17128 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

A Persistent XSS issue was discovered in the Visual Editor in MyBB before 1.8.19 via a Video MyCode.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
MybbMybb	See advisory	1.8.19

Patched Releases

Mybb

1.8.19

Timeline

Publicly disclosed
Sep 17, 2018
Last updated
Nov 21, 2024

Weakness Type

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

advisoryhttps://blog.mybb.com/2018/09/11/mybb-1-8-19-released-security-maintenance-release/
exploitExploitDB-45449
exploit45449

FAQ

Common Questions.

A Persistent XSS issue was discovered in the Visual Editor in MyBB before 1.8.19 via a Video MyCode.
Affected: Mybb. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Mybb 1.8.19.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2018-17128 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.