CVE-2020-2253: jenkins project jenkins email extension plugin Improper Certificate Validation
CVSS: 5.8v2.0MediumModified
AliasesGHSA-4qrj-99r6-jfrh
Published 16-09-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-2253 is a medium (CVSS 5.8) Improper Certificate Validation vulnerability in jenkins project jenkins email extension plugin. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 52% of scored vulnerabilities.
CVSS score
5.8/10
010
Medium · v2.0 (NVD)EPSS score
0.69%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 16-09-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 4.8Preferred score · OSV · Maven (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:NSourcesAll 2 agree
- NVDNIST4.8MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Medium 5.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.69%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
0.00 pp
From 0.69% on 20-09-2026
20-09-202620-10-2026
EPSS score0.69%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Jenkins1 product
- email_extension≤ 2.75
Jenkins project1 product
- jenkins email extension plugin≥ unspecified, ≤ 2.75
Org.jenkins-ci.plugins1 product
- email-ext< 2.76
3 vendors · 3 products
References
5 links- www.openwall.com/lists/oss-security/2020/09/16/3Mailing ListX Refsource MLISTWEBThird Party Advisory
