CVE-2016-8581

mediumpriority · track · 40EPSS 0.171 · 97 %ileexploit · weaponizedEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · weaponized

Likely / severe?

17.1% (97th) EPSS

CVSS 4.3 · medium

Is it mine?

3 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

A persistent XSS vulnerability exists in the User-Agent header of the login process of AlienVault OSSIM and USM before 5.3.2 that allows an attacker to steal session IDs of logged in users when the current sessions are viewed by an administrator.

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.06.1mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.06mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Fsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimary

exploits (2)

Public proof-of-concept and weaponised exploit code.

exploit/linux/http/alienvault_sqli_execAlienVault OSSIM SQL Injection and Remote Code Executionweaponized · metasploit
EDB-40683Alienvault OSSIM/USM 5.3.1 - Persistent Cross-Site Scriptingfunctional · exploit_db

affected products (3)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
alienvault open source security information and event management≤ 5.3.1nvdUScpe:2.3:a:alienvault:open_source_security_information_and_event_management:*:*:*:*:*:*:*:*
alienvault unified security management≤ 5.3.1nvdUScpe:2.3:a:alienvault:unified_security_management:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2016-10-28modified 2026-06-17

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+53072 more

references (8)

External citations — patches, advisories, analysis.

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