5.4

CVE-2021-21611: jenkins project jenkins Cross-site Scripting

CVSS: 5.4v3.1MediumModified
AliasesGHSA-mj7q-cmf3-mg7hBIT-jenkins-2021-21611
Published 13-01-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-21611 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in jenkins project jenkins. EPSS estimates a 1.04% chance of exploitation in the next 30 days, higher than 63.5% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (NVD)
EPSS score
1.04%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4
RHSA-2021:0423RHSA-2021:0429RHSA-2021:0637RHSA-2021:2437

Timeline

  1. 13-01-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape display names and IDs of item types shown on the New Item page, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to specify display names or IDs of item types.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.04%

Chance of exploitation in the next 30 days

Percentile

64%

Versus all other CVEs

30-day change

+0.01 pp

From 1.03% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.04%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Jenkins1 product
Jenkins project1 product
  • jenkins≥ unspecified, ≤ 2.274 | ≥ unspecified, ≤ LTS 2.263.1
Org.jenkins-ci.main1 product
  • jenkins-core< 2.263.2 | ≥ 2.264, < 2.275

3 vendors · 3 products

References

4 links