CVE-2026-125880
Stored XSS via MMS3 patch metadata (admin context)
Description
Improper neutralization of HTTP headers for scripting syntax vulnerability in N-able N-central allows Cross-Site Scripting (XSS). This issue affects N-central: before 26.4.1.
INFO
Published Date :
Nov. 10, 2026, 10:18 p.m.
Last Modified :
Nov. 10, 2026, 10:18 p.m.
Remotely Exploit :
Yes !
Source :
a5532a13-c4dd-4202-bef1-e0b8f2f8d12b
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | a5532a13-c4dd-4202-bef1-e0b8f2f8d12b | ||||
| CVSS 4.0 | HIGH | a5532a13-c4dd-4202-bef1-e0b8f2f8d12b |
Solution
- Update N-able N-central to version 26.4.1 or later.
- Apply vendor-provided patches and updates.
- Validate secure header handling.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-125880.
| URL | Resource |
|---|---|
| https://me.n-able.com/s/security-advisory/aArVy0000002imXKAQ/cve202612588-stored-xss-via-mms3-patch-metadata-admin-context |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-125880 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-125880
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-125880 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-125880 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by a5532a13-c4dd-4202-bef1-e0b8f2f8d12b
Nov. 10, 2026
Action Type Old Value New Value Added Description Improper neutralization of HTTP headers for scripting syntax vulnerability in N-able N-central allows Cross-Site Scripting (XSS). This issue affects N-central: before 26.4.1. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-644 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/125xxx/CVE-2026-125880.json">CVE-2026-125880</a> Added Reference https://me.n-able.com/s/security-advisory/aArVy0000002imXKAQ/cve202612588-stored-xss-via-mms3-patch-metadata-admin-context