How severe is CVE-2020-29436?

CVE-2020-29436 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-29436 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-29436?

CVE-2020-29436 affects Sonatype Nexus Repository Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-29436?

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

When was CVE-2020-29436 published?

CVE-2020-29436 was published on 2020-12-17 and last updated on 2026-06-17.

CVE-2020-29436

CVE-2020-29436 is a medium-severity vulnerability in Sonatype Nexus Repository Manager 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-611.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 5.5
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Sonatype Nexus Repository Manager
Published: 2020-12-17
Last modified: 2026-06-17

Description

Sonatype Nexus Repository Manager 3.x before 3.29.0 allows a user with admin privileges to configure the system to gain access to content outside of NXRM via an XXE vulnerability. Fixed in version 3.29.0.

Frequently asked questions

What is CVE-2020-29436?: Sonatype Nexus Repository Manager 3.x before 3.29.0 allows a user with admin privileges to configure the system to gain access to content outside of NXRM via an XXE vulnerability. Fixed in version 3.29.0.
How severe is CVE-2020-29436?: CVE-2020-29436 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-29436 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-29436?: CVE-2020-29436 affects Sonatype Nexus Repository Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-29436?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-29436 published?: CVE-2020-29436 was published on 2020-12-17 and last updated on 2026-06-17.

References

https://support.sonatype.com/hc/en-us/articles/1500000415082-CVE-2020-29436-Nexus-Repository-Manager-3-XML-External-Entities-injection-2020-12-15

Affected products (1)

cpe:2.3:a:sonatype:nexus_repository_manager:*:*:*:*:*:*:*:*

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CVE-2018-1000837 — Critical (CVSS 10.0): UML Designer version <= 8.0.0 contains a XML External Entity (XXE) vulnerability in XML parser for plugins that can…
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