CVE-2021-43959Network attack vector

Internal resource disclosure via Insight CSV import

Published Jul 26, 2022 · Updated Oct 3, 2024

SSRF in Atlassian Jira Service Management affected releases allows remote authenticated users to read internal network resources. The Insight CSV-import path sends server-side requests to attacker-selected resource locations without preventing access to internal destinations. Reachability requires authentication and user interaction; EC2 deployments expose metadata credentials and other confidential content.

CVSS severity5.7
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Atlassian Jira Service Management affected releases allows remote authenticated users to read internal network resources. The Insight CSV-import path sends server-side requests to attacker-selected resource locations without preventing access to internal destinations. Reachability requires authentication and user interaction; EC2 deployments expose metadata credentials and other confidential content.

The record

CVE
CVE-2021-43959
Published
Jul 26, 2022
Updated
Oct 3, 2024
Vendor
Atlassian
Product
Jira Service Management Server
Classifications
CWE-918, T1552.005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.14.0 <unspecified
  2. Affected versionversion=4.21.0 <unspecified
  3. Affected versionversion=unspecified <4.13.20
  4. Affected versionversion=unspecified <4.20.8
  5. Affected versionversion=unspecified <4.22.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Atlassian · Jira Service Management Serverversion=4.14.0 <unspecified; version=4.21.0 <unspecified; version=unspecified <4.13.20; version=unspecified <4.20.8; version=unspecified <4.22.2
Atlassian · Jira Service Management Data Centerversion=4.14.0 <unspecified; version=4.21.0 <unspecified; version=unspecified <4.13.20; version=unspecified <4.20.8; version=unspecified <4.22.2

Published CVSS scores

5.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1552.005Unsecured Credentials: Cloud Instance Metadata API

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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