CVE-2026-3879 | Stored XSS Vulnerability

Zohocorp ManageEngine Exchange Reporter Plus versions before 5802 are vulnerable to Stored XSS in Equipment Mailbox Details report.

Published: 2026-04-03 Last update: 2026-04-03 Assigner: 0fc0942c-577d-436f-ae8e-945763c79b02 Source: 0fc0942c-577d-436f-ae8e-945763c79b02
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-3879 is rated Low Risk (32.2/100): CVSS High severity, with low exploitation likelihood (EPSS 0.03%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-3879

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-03 — 0.03% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-3879

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.3 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.1 5.2 0fc0942c-577d-436f-ae8e-945763c79b02
4.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.7 2.7 [email protected]

Weakness enumeration for CVE-2026-3879

Affected software / configurations for CVE-2026-3879

Vendor Product Version Raw CPE
zohocorp manageengine_exchange_reporter_plus < 5.8 cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:*:*:*:*:*:*:*:*
zohocorp manageengine_exchange_reporter_plus 5.8 cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.8:-:*:*:*:*:*:*
zohocorp manageengine_exchange_reporter_plus 5.8 cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.8:5800:*:*:*:*:*:*
zohocorp manageengine_exchange_reporter_plus 5.8 cpe:2.3:a:zohocorp:manageengine_exchange_reporter_plus:5.8:5801:*:*:*:*:*:*

References for CVE-2026-3879

cvelogic Threat Intelligence