7.2

CVE-2021-26070: atlassian data_center Improper Authentication

Modified
Published 22-03-2021Last modified 16-09-2024

Vulnerability summary

CVE-2021-26070 is a high (CVSS 7.2) Improper Authentication vulnerability in atlassian data_center. EPSS estimates a 1.95% chance of exploitation in the next 30 days, higher than 80.2% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.2 (NVD); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.2/10
010
High · v3.1 (NVD)
EPSS score
1.95%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 22-03-2021
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to evade behind-the-firewall protection of app-linked resources via a Broken Authentication vulnerability in the `makeRequest` gadget resource. The affected versions are before version 8.13.3, and from version 8.14.0 before 8.14.1.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.95%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

Decrease -0.01 pp

From 1.96% 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.

Atlassian4 products
  • data_center< 8.13.3 | ≥ 8.14.0, < 8.14.1
  • jira< 8.13.3
  • jira_data_center≥ unspecified, < 8.13.3 | ≥ 8.14.0, < unspecified | ≥ unspecified, < 8.14.1
  • jira_server≥ unspecified, < 8.13.3 | ≥ 8.14.0, < unspecified | ≥ unspecified, < 8.14.1 | ≥ 8.14.0, < 8.14.1

1 vendor · 4 products

References

1 links