How severe is CVE-2020-4828?

CVE-2020-4828 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-4828 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4828?

CVE-2020-4828 primarily affects Ibm Api Connect. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4828?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-4828 published?

CVE-2020-4828 was published on 2021-02-04 and last updated on 2026-06-17.

CVE-2020-4828

CVE-2020-4828 is a medium-severity vulnerability in Ibm Api Connect with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.4
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Ibm Api Connect
Published: 2021-02-04
Last modified: 2026-06-17

Description

IBM API Connect 10.0.0.0 through 10.0.1.0 and 2018.4.1.0 through 2018.4.1.13 is vulnerable to web cache poisoning, caused by improper input validation by modifying HTTP request headers. IBM X-Force ID: 189842.

Frequently asked questions

What is CVE-2020-4828?: IBM API Connect 10.0.0.0 through 10.0.1.0 and 2018.4.1.0 through 2018.4.1.13 is vulnerable to web cache poisoning, caused by improper input validation by modifying HTTP request headers. IBM X-Force ID: 189842.
How severe is CVE-2020-4828?: CVE-2020-4828 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-4828 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4828?: CVE-2020-4828 primarily affects Ibm Api Connect. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4828?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4828 published?: CVE-2020-4828 was published on 2021-02-04 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:ibm:api_connect:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:api_connect:10.0.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:api_connect:10.0.1.0:*:*:*:*:*:*:*

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