6.1

CVE-2021-26078: atlassian data_center

Modified
Published 07-06-2021Last modified 17-10-2024

Vulnerability summary

CVE-2021-26078 is a medium (CVSS 6.1) vulnerability in atlassian data_center. EPSS estimates a 4.03% chance of exploitation in the next 30 days, higher than 90.6% of scored vulnerabilities. 2 public exploits are recorded.

Priority
Routine

Not severe (CVSS 6.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
4.03%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2reference, exploit-database

Timeline

  1. 07-06-2021
    PublishedVulnerability first disclosed.
  2. 17-10-2024
    Last modifiedVulnerability information updated.

Description

The number range searcher component in Jira Server and Jira Data Center before version 8.5.14, from version 8.6.0 before version 8.13.6, and from version 8.14.0 before version 8.16.1 allows remote attackers inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

4.03%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

No change 0.00 pp

From 4.03% 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

2 found
  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

  • exploit-databasemacosUnverified

    Atlassian Jira Server Data Center 8.16.0 - Reflected Cross-Site Scripting (XSS)

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

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

Atlassian4 products
  • data_center< 8.5.14 | ≥ 8.6.0, < 8.13.6 | ≥ 8.14.0, < 8.16.1
  • jira< 8.5.14
  • jira_data_center≥ unspecified, < 8.5.14 | ≥ 8.6.0, < unspecified | ≥ unspecified, < 8.13.6 | ≥ 8.14.0, < unspecified | ≥ unspecified, < 8.16.1
  • jira_server≥ unspecified, < 8.5.14 | ≥ 8.6.0, < unspecified | ≥ unspecified, < 8.13.6 | ≥ 8.14.0, < unspecified | ≥ unspecified, < 8.16.1 | ≥ 8.6.0, < 8.13.6 | ≥ 8.14.0, < 8.16.1

1 vendor · 4 products

References

2 links