5.3

CVE-2021-21609: jenkins project jenkins Incorrect Authorization

CVSS: 5.3v3.1MediumModified
AliasesGHSA-4625-q52w-39cxBIT-jenkins-2021-21609
Published 13-01-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-21609 is a medium (CVSS 5.3) Incorrect Authorization vulnerability in jenkins project jenkins. EPSS estimates a 1.32% chance of exploitation in the next 30 days, higher than 70.4% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (NVD)
EPSS score
1.32%
0%100%
Low · +0.02 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 correctly match requested URLs to the list of always accessible paths, allowing attackers without Overall/Read permission to access some URLs as if they did have Overall/Read permission.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.32%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

+0.02 pp

From 1.31% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.32%

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