CVE-2026-125880

Stored XSS via MMS3 patch metadata (admin context)

High 8.3

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.

Key facts

Published: 10 Nov 2026
Last changed: 13 Nov 2026
Assigned by: N-able
EPSS: 0.471% likely to be exploited in the next 30 days, higher than 41.317% of CVEs (scores for 15 Nov 2026)
SSVC (CISA): Exploitation: none; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

8.3CVSS 4.0, Highfrom the CNA (N-able)CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

CAPEC-63 Cross-Site Scripting (XSS) (CNA impact statement)

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Vendor	Product	Versions
N-able	N-central	Default status: unaffected 0 up to but excluding 26.4.1 (affected)

Timeline

10 Nov 2026 Published

Weakness

CWE-644

Related coverage

N-able patches N-central zero-days after researcher drops over 30 flaws and PoCs13 Nov 2026

References

me.n-able.comvendor-advisory