How severe is CVE-2020-36240?

CVE-2020-36240 has a CVSS 3.x base score of 5.3, 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 none, and availability none.

Is CVE-2020-36240 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-36240?

CVE-2020-36240 affects Atlassian Crowd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-36240?

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

When was CVE-2020-36240 published?

CVE-2020-36240 was published on 2021-03-01 and last updated on 2026-06-17.

CVE-2020-36240

CVE-2020-36240 is a medium-severity vulnerability in Atlassian Crowd with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Atlassian Crowd
Published: 2021-03-01
Last modified: 2026-06-17

Description

The ResourceDownloadRewriteRule class in Crowd before version 4.0.4, and from version 4.1.0 before 4.1.2 allowed unauthenticated remote attackers to read arbitrary files within WEB-INF and META-INF directories via an incorrect path access check.

Frequently asked questions

What is CVE-2020-36240?: The ResourceDownloadRewriteRule class in Crowd before version 4.0.4, and from version 4.1.0 before 4.1.2 allowed unauthenticated remote attackers to read arbitrary files within WEB-INF and META-INF directories via an incorrect path access check.
How severe is CVE-2020-36240?: CVE-2020-36240 has a CVSS 3.x base score of 5.3, 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 none, and availability none.
Is CVE-2020-36240 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-36240?: CVE-2020-36240 affects Atlassian Crowd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-36240?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-36240 published?: CVE-2020-36240 was published on 2021-03-01 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/CWD-5685

Affected products (1)

cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*

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