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Fencer Vulns
medium 5.3

CVE-2023-22503 json

Affected versions of Atlassian Confluence Server and Data Center allow anonymous remote attackers to view the names of attachments and labe…

published 2023-05-01 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-26643

cvss
5.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

Affected versions of Atlassian Confluence Server and Data Center allow anonymous remote attackers to view the names of attachments and labels in a private Confluence space. This occurs via an Information Disclosure vulnerability in the macro preview feature.

This vulnerability was reported by Rojan Rijal of the Tinder Security Engineering team.

The affected versions are before version 7.13.15, from version 7.14.0 before 7.19.7, and from version 7.20.0 before 8.2.0.

Patch / fix

  • Atlassian Confluence Data Center < 7.20.2, >= 7.13.5, >= 7.19.7, >= 8.20.0
  • Atlassian Confluence Server < 7.20.2, >= 7.13.5, >= 7.19.7, >= 8.20.0
  • atlassian confluence_data_center 7.13.15, 7.19.7, 8.2.0
  • atlassian confluence_server 7.13.15, 7.19.7, 8.2.0

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.79% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

  • Atlassian Confluence Data Center
  • Atlassian Confluence Server
  • atlassian confluence_data_center
  • atlassian confluence_server

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.