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No exploitation reportedFix available

CVE-2020-2252

No exploitation reported by the sources we read.

  • Published2020-09-16
  • Fixed in1.32.1 · 1.31.1 · 1.29.1
  • WeaknessCWE-295

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Jenkins Mailer Plugin 1.32 and earlier does not perform hostname validation when connecting to the configured SMTP server.

Timeline

dates in UTC
  1. 2020-09-1614:15CVE publishedNVD

Versions per branch

OSV · NVD
mailer
BranchAffectedFixed in
1.32≥ 1.32, < 1.32.11.32.1
1.x≥ 1.30, < 1.31.11.31.1
1.29< 1.29.11.29.1
Jenkins mailer
BranchAffectedFixed in
1.32≤ 1.32no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • jenkins-2-pluginsRed Hat:openshift:4.6::el8all versions · fixed in 0:4.6.1601368321-1.el8
  • jenkins-2-pluginsRed Hat:openshift:3.11::el7all versions · fixed in 0:3.11.1603460090-1.el7
  • openshift-clientsRed Hat:openshift:4.6::el8all versions · fixed in 0:4.6.0-202010081244.p0.git.3794.4743d24.el8and 1 other package
  • openshift-clientsRed Hat:openshift:4.6::el7all versions · fixed in 0:4.6.0-202010081244.p0.git.3794.4743d24.el7and 1 other package
  • podmanRed Hat:openshift:4.6::el8all versions · fixed in 0:1.9.3-3.rhaos4.6.el8and 6 other packages
  • runcRed Hat:openshift:4.6::el8all versions · fixed in 0:1.0.0-81.rhaos4.6.git5b757d4.el8and 2 other packages
  • runcRed Hat:openshift:4.6::el7all versions · fixed in 0:1.0.0-81.rhaos4.6.git5b757d4.el7and 1 other package
  • skopeoRed Hat:openshift:4.6::el8all versions · fixed in 1:1.1.1-2.rhaos4.6.el8and 4 other packages

Vendor advisories

  • RHSA-2020:4297 Red Hat Product Security2 products fixed

    Red Hat Security Advisory: OpenShift Container Platform 4.6.1 package security update

Full record on NVD

Fix

  1. Update mailer to 1.32.1 · 1.31.1 · 1.29.1
  2. Vendor fix Red Hat Product Security RHSA-2020:4297 · 2 productsFor OpenShift Container Platform 4.6 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.openshift.com/container-platform/4.6/release_notes/ocp-4-6-r…

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.14.8read 2026-10-23
  • NVDCVSS 2.05.8read 2026-10-23
  • NVDweakness (CWE)CWE-295read 2026-10-23
  • FIRST EPSSEPSS score1.0 %2026-11-09
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2022-06-23

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Published
2020-09-16
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-6fr3-286q-q3cr

Frequently asked questions

What is CVE-2020-2252?

Jenkins Mailer Plugin 1.32 and earlier does not perform hostname validation when connecting to the configured SMTP server.

Is CVE-2020-2252 actively exploited?

Active exploitation of CVE-2020-2252 has not been confirmed. Its EPSS score was 1.0% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-2252?

CVE-2020-2252 has a CVSS v3 base score of 4.8 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

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