CVE-2021-26078

mediumpriority · track · 35EPSS 0.040 · 91 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

4.03% (91st) EPSS

CVSS 4.3 · medium

Is it mine?

16 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-50068Atlassian Jira Server Data Center 8.16.0 - Reflected Cross-Site Scripting (XSS)PoC · exploit_db

affected products (16)

Products and version ranges known to be affected.

Atlassian Jira Data Center8.14.0 → unspecifiedenisa_euvdEU
Atlassian Jira Data Center8.6.0 → unspecifiedenisa_euvdEU
Atlassian Jira Data Centerunspecified → 8.13.6enisa_euvdEU
Atlassian Jira Data Centerunspecified → 8.16.1enisa_euvdEU
Atlassian Jira Data Centerunspecified → 8.5.14enisa_euvdEU
Atlassian Jira Server8.14.0 → unspecifiedenisa_euvdEU
Atlassian Jira Server8.6.0 → unspecifiedenisa_euvdEU
Atlassian Jira Serverunspecified → 8.13.6enisa_euvdEU
Atlassian Jira Serverunspecified → 8.16.1enisa_euvdEU
Atlassian Jira Serverunspecified → 8.5.14enisa_euvdEU
atlassian data center< 8.5.14nvdUScpe:2.3:a:atlassian:data_center:*:*:*:*:*:*:*:*
atlassian data center8.14.0 → 8.16.1nvdUScpe:2.3:a:atlassian:data_center:*:*:*:*:*:*:*:*
atlassian data center8.6.0 → 8.13.6nvdUScpe:2.3:a:atlassian:data_center:*:*:*:*:*:*:*:*
atlassian jira< 8.5.14nvdUScpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:*
atlassian jira server8.14.0 → 8.16.1nvdUScpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*
atlassian jira server8.6.0 → 8.13.6nvdUScpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-06-07modified 2026-06-17

related (53,008)

Related entries.

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CVE-2025-48700US	—OT critical	1.71% (77th)	KEV	2025-06-23
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0 and 10.0 and 10.1. A Cross-Site Scripting (XSS) vulnerability in the Zimbra Classic UI allows attackers to exec…
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+53003 more

references (7)

External citations — patches, advisories, analysis.

scry

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