How severe is CVE-2020-29445?

CVE-2020-29445 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-29445 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-29445?

CVE-2020-29445 affects Atlassian Confluence Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-29445?

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

When was CVE-2020-29445 published?

CVE-2020-29445 was published on 2021-05-07 and last updated on 2026-06-17.

CVE-2020-29445

CVE-2020-29445 is a medium-severity vulnerability in Atlassian Confluence Server with a CVSS 3.x base score of 4.3. 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Atlassian Confluence Server
Published: 2021-05-07
Last modified: 2026-06-17

Description

Affected versions of Confluence Server before 7.4.8, and versions from 7.5.0 before 7.11.0 allow attackers to identify internal hosts and ports via a blind server-side request forgery vulnerability in Team Calendars parameters.

Frequently asked questions

What is CVE-2020-29445?: Affected versions of Confluence Server before 7.4.8, and versions from 7.5.0 before 7.11.0 allow attackers to identify internal hosts and ports via a blind server-side request forgery vulnerability in Team Calendars parameters.
How severe is CVE-2020-29445?: CVE-2020-29445 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-29445 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-29445?: CVE-2020-29445 affects Atlassian Confluence Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-29445?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-29445 published?: CVE-2020-29445 was published on 2021-05-07 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/CONFSERVER-61453

Affected products (1)

cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*

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