7.5

CVE-2021-21671: jenkins project jenkins

CVSS: 7.5v3.1HighModified
AliasesGHSA-4wr9-2xc6-jmg5BIT-jenkins-2021-21671
Published 30-06-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-21671 is a high (CVSS 7.5) vulnerability in jenkins project jenkins. EPSS estimates a 1.75% chance of exploitation in the next 30 days, higher than 77.6% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.75%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3
RHBA-2021:3033RHBA-2021:3396RHSA-2021:3820

Timeline

  1. 30-06-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.75%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

+0.05 pp

From 1.71% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.75%

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

No weakness data has been published for this record.

Affected systems

Jenkins1 product
  • jenkins≥ 2.266, < 2.300 | ≥ 2.277.1, < 2.289.2
Jenkins project1 product
  • jenkins≥ 2.266, < unspecified | ≥ LTS 2.277.1, < unspecified | ≥ unspecified, ≤ 2.299 | ≥ unspecified, ≤ LTS 2.289.1
Org.jenkins-ci.main1 product
  • jenkins-core≥ 2.292, < 2.300 | < 2.289.2

3 vendors · 3 products

References

5 links