CVE-2025-26400: SolarWinds Web Help Desk XML External Entity Injection (XXE) Vulnerability

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-29 · updated 2026-06-17
Weakness: CWE-611

Description

SolarWinds Web Help Desk was reported to be affected by an XML External Entity Injection (XXE) vulnerability that could lead to information disclosure. A valid, low-privilege access is required unless the attacker had access to the local server to modify configuration files.

Affected products

SolarWinds Web Help Desk: before 12.8.7 — fixed in 12.8.7

How to fix

Upgrade to a fixed version: SolarWinds Web Help Desk 12.8.7. Check the vendor advisory for mitigations.

References

https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_12-8-7_release_notes.htm
https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-26400

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