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CVE-2020-2257

16
FAUCET Score

CVE-2020-2257 is a stored cross-site scripting (XSS) vulnerability affecting Jenkins Validating String Parameter Plugin versions 2.4 and earlier. The vulnerability arises from a lack of proper escaping for user-controlled fields, allowing attackers with Job/Configure permission to inject malicious scripts. This vulnerability has a CVSS score of 5.4 (Medium), indicating a network-based attack with low complexity, requiring user interaction, and leading to low impact on confidentiality and integrity. The EPSS score is very low, suggesting a minimal likelihood of exploitation. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are also extremely limited, indicating low public attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.4CPE matchmatch criteria
cpe:2.3:a:jenkins:validating_string_parameter:*:*:*:*:*:jenkins:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.73%
Probability of exploitation in next 30 days
EPSS Percentile
50.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0073 is in the 85th percentile among its peer group of 15,224 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.jenkins-ci.plugins:validating-string-parameterFixed in: 2.5
jenkinsvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

mavenGHSA-fvwh-wv43-8qj5high

Stored XSS vulnerability in Validating String Parameter Plugin

May 24, 2022

References

jenkins.io / security/advisory/2020-09-16
Vendor Advisory
openwall.com / lists/oss-security/2020/09/16/3
Mailing ListThird Party Advisory