Reflected cross site scripting affecting SolarWinds: DPA 2021.3.7388

published 2021-10-21 5y ago modified 2026-06-17 4mo ago also EUVD-2021-21871

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits: 0; none known

This vulnerability occurred due to missing input sanitization for one of the output fields that is extracted from headers on specific section of page causing a reflective cross site scripting attack. An attacker would need to perform a Man in the Middle attack in order to change header for a remote victim.

Patch / fix

fixed in 1

SolarWinds SolarWinds 2021.3.7388

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Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
NVD	3.1	4.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	2.6	AV:N/AC:H/Au:N/C:N/I:P/A:N

Affected products

SolarWinds SolarWinds

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

solarwinds.com /trust-center/security-advisories/CVE-2021-35228
vendor-advisory
documentation.solarwinds.com /en/success_center/dpa/content/release_notes/dpa_2021-3-7438_release_notes.htm
release-notes, vendor-advisory

Sources

CVE List CVE-2021-35228
NVD CVE-2021-35228

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