CVE-2018-20827 — The activity stream gadget in Jira before version 7.13.1 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the country parameter

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MEDIUM

The activity stream gadget in Jira before version 7.13.1 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the country parameter

Published Aug 9, 2019

5.4

MEDIUM

CVSS 3.0

EPSS 0.76%

Description

The activity stream gadget in Jira before version 7.13.1 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the country parameter.

Affected products

Vendor Atlassian Product Jira Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <7.13.1

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Atlassian

Jira

n/a

Version	Status	Constraints
unspecified	affected	<7.13.1

Remediation

No remediation recorded yet.

Metrics

0.76% 0.00756

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00756

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.76% (0.00756)	53.48th	v5 (v2026.06.15)
Sep 20, 2026	0.76% (0.00756)	53.63th	v5 (v2026.06.15)
Jul 20, 2024	0.07% (0.00072)	31.59th	v3 (v2023.03.01)
Jun 20, 2024	0.07% (0.00072)	31.24th	v3 (v2023.03.01)
Mar 7, 2023	0.07% (0.00072)	29.19th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)
Feb 3, 2022	0.52% (0.00523)	12.55th	v5 (v2026.06.15)
Apr 14, 2021	0.52% (0.00523)	0.00th	v1