Medium severity · published Jul 21, 2026
CVE-2026-28315
SolarWinds Serv-U Authenticated Stored Cross-site Scripting (XSS) Vulnerability
6.2
CVSS
0.5%
EPSS
No
On KEV
Description
SolarWinds Serv-U was found to be affected by a stored cross-site scripting vulnerability that could lead to session hijacking or information disclosure from an administrator account.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
Serv-U · SolarWinds
15.5.4 HF1 and below · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-28315
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-28315
Release Notes
https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htm
Vendor Advisory
https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28315
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CVE-2021-35247
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CVE-2020-35481
SolarWinds Serv-U before 15.2.2 allows Unauthenticated Macro Injection