7.5

CVE-2021-41311: atlassian jira_data_center Improper Authentication

Modified
Published 08-12-2021Last modified 10-10-2024

Vulnerability summary

CVE-2021-41311 is a high (CVSS 7.5) Improper Authentication vulnerability in atlassian jira_data_center. EPSS estimates a 0.86% chance of exploitation in the next 30 days, higher than 58.6% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.86%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 08-12-2021
    PublishedVulnerability first disclosed.
  2. 10-10-2024
    Last modifiedVulnerability information updated.

Description

Affected versions of Atlassian Jira Server and Data Center allow attackers with access to an administrator account that has had its access revoked to modify projects' Users & Roles settings, via a Broken Authentication vulnerability in the /plugins/servlet/project-config/PROJECT/roles endpoint. The affected versions are before version 8.19.1.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.86%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.86% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Atlassian3 products

1 vendor · 3 products

References

1 links