How severe is CVE-2020-2305?

CVE-2020-2305 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-2305 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-2020-2305?

CVE-2020-2305 affects Jenkins Mercurial. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-2305?

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

When was CVE-2020-2305 published?

CVE-2020-2305 was published on 2020-11-04 and last updated on 2026-06-17.

CVE-2020-2305

CVE-2020-2305 is a medium-severity vulnerability in Jenkins Mercurial 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.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Jenkins Mercurial
Published: 2020-11-04
Last modified: 2026-06-17

Description

Jenkins Mercurial Plugin 2.11 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

Frequently asked questions

What is CVE-2020-2305?: Jenkins Mercurial Plugin 2.11 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.
How severe is CVE-2020-2305?: CVE-2020-2305 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-2305 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-2020-2305?: CVE-2020-2305 affects Jenkins Mercurial. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-2305?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-2305 published?: CVE-2020-2305 was published on 2020-11-04 and last updated on 2026-06-17.

References

https://www.jenkins.io/security/advisory/2020-11-04/#SECURITY-2115

Affected products (1)

cpe:2.3:a:jenkins:mercurial:*:*:*:*:*:jenkins:*:*

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