jenkins-2-plugins/mailer: Missing hostname validation in Mailer Plugin could result in MITM
Published Sep 16, 2020
4.8
MEDIUMCVSS 3.1
EPSS 0.96%
Description
Jenkins Mailer Plugin 1.32 and earlier does not perform hostname validation when connecting to the configured SMTP server.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<=1.32
- Version 1.29.1StatusunaffectedConstraints-
- Version 1.31.1StatusunaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jenkins project | Jenkins Mailer Plugin | n/a |
|
No data.
Red Hat OpenShift Container Platform 3.11
jenkins-2-plugins-0:3.11.1603460090-1.el7
Fixed · RHSA-2020:5102
Red Hat OpenShift Container Platform 4.6
jenkins-2-plugins-0:4.6.1601368321-1.el8
Fixed · RHSA-2020:4297
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat OpenShift Container Platform 3.11 | jenkins-2-plugins-0:3.11.1603460090-1.el7 | Fixed | RHSA-2020:5102 |
| Red Hat OpenShift Container Platform 4.6 | jenkins-2-plugins-0:4.6.1601368321-1.el8 | Fixed | RHSA-2020:4297 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.96% (0.00959) | 60.17th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.96% (0.00963) | 60.12th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.09% (0.00090) | 39.04th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.09% (0.00090) | 37.56th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00078) | 31.55th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Jan 5, 2022 | 0.62% (0.00624) | 46.35th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (10)
- http://www.openwall.com/lists/oss-security/2020/09/16/3 mailing-listx_refsource_MLISTThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2020-2252 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1880454 Issue Tracking
- https://github.com/CVEProject/cvelist/blob/16860a328d970faa6e4350b0fa446f64a52e52ca/2020/2xxx/CVE-2020-2252.json
- https://github.com/advisories/GHSA-6fr3-286q-q3cr Advisory
- https://github.com/jenkinsci/mailer-plugin/commit/e1893c6d105669f134ee5c5212ef9f3944d7d00d
- https://nvd.nist.gov/vuln/detail/CVE-2020-2252
- https://www.cve.org/CVERecord?id=CVE-2020-2252
- https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1813 x_refsource_CONFIRMVendor Advisory
- https://www.openwall.com/lists/oss-security/2020/09/16/3
Change history (0)
No recorded changes yet.