CVE-2018-13387 — The IncomingMailServers resource in Atlassian JIRA Server before version 7.6.7, from version 7.7.0 before version 7.7.5, from version 7.8.0 before version 7.8.5, from version 7.9.0 before version 7.9.3 and from version 7.10.0 before version 7.10.2 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the messagesThreshold parameter as the fix for CVE-2017-18039 was incomplete

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MEDIUM

The IncomingMailServers resource in Atlassian JIRA Server before version 7.6.7, from version 7.7.0 before version 7.7.5, from version 7.8.0 before version 7.8.5, from version 7.9.0 before version 7.9.3 and from version 7.10.0 before version 7.10.2 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the messagesThreshold parameter as the fix for CVE-2017-18039 was incomplete

Published Jul 16, 2018

6.1

MEDIUM

CVSS 3.0

EPSS 1.45%

Description

The IncomingMailServers resource in Atlassian JIRA Server before version 7.6.7, from version 7.7.0 before version 7.7.5, from version 7.8.0 before version 7.8.5, from version 7.9.0 before version 7.9.3 and from version 7.10.0 before version 7.10.2 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the messagesThreshold parameter as the fix for CVE-2017-18039 was incomplete.

Affected products

Vendor Atlassian Product Jira Default
n/a
- Version
  7.10.0
  Status
  affected
  Constraints
  <unspecified
- Version
  7.7.0
  Status
  affected
  Constraints
  <unspecified
- Version
  7.8.0
  Status
  affected
  Constraints
  <unspecified
- Version
  7.9.0
  Status
  affected
  Constraints
  <unspecified
- Version
  unspecified
  Status
  affected
  Constraints
  <7.10.2
- Version
  unspecified
  Status
  affected
  Constraints
  <7.6.7
- Version
  unspecified
  Status
  affected
  Constraints
  <7.7.5
- Version
  unspecified
  Status
  affected
  Constraints
  <7.8.5
- Version
  unspecified
  Status
  affected
  Constraints
  <7.9.3

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
7.10.0	affected	<unspecified
7.7.0	affected	<unspecified
7.8.0	affected	<unspecified
7.9.0	affected	<unspecified
unspecified	affected	<7.10.2
unspecified	affected	<7.6.7
unspecified	affected	<7.7.5
unspecified	affected	<7.8.5
unspecified	affected	<7.9.3

Remediation

No remediation recorded yet.

Metrics

1.45% 0.01450

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.01450

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 2, 2026	1.45% (0.01450)	72.44th	v5 (v2026.06.15)
Aug 23, 2026	2.07% (0.02068)	79.69th	v5 (v2026.06.15)
Jul 20, 2024	0.10% (0.00096)	40.87th	v3 (v2023.03.01)
Dec 7, 2023	0.10% (0.00095)	39.53th	v3 (v2023.03.01)
Mar 7, 2023	0.11% (0.00113)	43.05th	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	0.78% (0.00785)	22.12th	v5 (v2026.06.15)
Apr 14, 2021	0.78% (0.00785)	0.00th	v1

Weaknesses (1)

CWE-79

Cross-site Scripting (XSS)

References (2)

http://www.securityfocus.com/bid/104890
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://jira.atlassian.com/browse/JRASERVER-67526
x_refsource_CONFIRMVendor Advisory

Link	Providers	Tags
http://www.securityfocus.com/bid/104890		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://jira.atlassian.com/browse/JRASERVER-67526		x_refsource_CONFIRMVendor Advisory