CVE-2020-4146Network attack vector

Sensitive cookie disclosure via missing HttpOnly attribute

Published Nov 12, 2021 · Updated Sep 16, 2024

Information disclosure in IBM Security SiteProtector System 3.1.1 allows remote attackers to obtain sensitive cookie data. The web interface issues a sensitive cookie without the HttpOnly attribute, leaving its value accessible to client-side script. IBM has not identified the cookie or disclosed how remote attackers obtain script access; the reported impact is limited to information exposure.

CVSS severity4.0
Medium
EPSS probability1.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in IBM Security SiteProtector System 3.1.1 allows remote attackers to obtain sensitive cookie data. The web interface issues a sensitive cookie without the HttpOnly attribute, leaving its value accessible to client-side script. IBM has not identified the cookie or disclosed how remote attackers obtain script access; the reported impact is limited to information exposure.

The record

CVE
CVE-2020-4146
Published
Nov 12, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Security SiteProtector System
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 12, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Security SiteProtector Systemversion=3.1.1

Published CVSS scores

3.5IBMCVSS:3.0/A:N/AV:N/UI:N/C:L/S:C/AC:H/I:N/PR:N/RC:C/RL:O/E:U
4.0IBMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo