CVE-2020-4826Network attack vector

Unauthorized actions via cross-site request forgery

Published Feb 4, 2021 · Updated Sep 16, 2024

CSRF in IBM API Connect 2018.4.1.0 through 2018.4.1.13 and 10.0.0.0 through 10.0.1.0 lets attackers trigger unauthorized actions. IBM has not disclosed the affected request handler or the missing origin, token, or request-integrity check that permits a trusted browser to submit an attacker-chosen action. Exploitation requires a trusted user to transmit the crafted request; published impact is limited to unauthorized actions, without data disclosure or service interruption.

CVSS severity4.3
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in IBM API Connect 2018.4.1.0 through 2018.4.1.13 and 10.0.0.0 through 10.0.1.0 lets attackers trigger unauthorized actions. IBM has not disclosed the affected request handler or the missing origin, token, or request-integrity check that permits a trusted browser to submit an attacker-chosen action. Exploitation requires a trusted user to transmit the crafted request; published impact is limited to unauthorized actions, without data disclosure or service interruption.

The record

CVE
CVE-2020-4826
Published
Feb 4, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
API Connect
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 4, 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

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Is a vulnerable build present?

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

  1. Affected versionversion=10.0.0.0
  2. Affected versionversion=10.0.1.0
  3. Affected versionversion=2018.4.1.0
  4. Affected versionversion=2018.4.1.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · API Connectversion=10.0.0.0; version=10.0.1.0; version=2018.4.1.0; version=2018.4.1.13

Published CVSS scores

3.8IBMCVSS:3.0/C:N/AV:N/S:U/A:N/I:L/UI:R/AC:L/PR:N/E:U/RC:C/RL:O
4.3IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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

CWE-352Cross-Site Request Forgery (CSRF)

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

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Your stack

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