CVE-2021-43954Network attack vector

Internal resource enumeration via repository SSRF

Published Mar 14, 2022 · Updated Oct 4, 2024

SSRF in Atlassian FishEye and Crucible before 4.8.9 allows remote authenticated users to enumerate internal network and filesystem resources. DefaultRepositoryAdminService accepts repository resource locations and probes them from the server, revealing whether specified network or local-file resources exist. The user must hold the can add repository permission; in cloud hosting, the request can reach metadata services that expose credentials or other confidential data.

CVSS severity4.3
Medium
EPSS probability0.77%
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 FishEye and Crucible before 4.8.9 allows remote authenticated users to enumerate internal network and filesystem resources. DefaultRepositoryAdminService accepts repository resource locations and probes them from the server, revealing whether specified network or local-file resources exist. The user must hold the can add repository permission; in cloud hosting, the request can reach metadata services that expose credentials or other confidential data.

The record

CVE
CVE-2021-43954
Published
Mar 14, 2022
Updated
Oct 4, 2024
Vendor
Atlassian
Product
FishEye
Classifications
CWE-918, T1046, T1083
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 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=unspecified <4.8.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Atlassian · FishEyeversion=unspecified <4.8.9
Atlassian · Crucibleversion=unspecified <4.8.9

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/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)
T1046Network Service Discovery
T1083File and Directory Discovery

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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