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Fencer Vulns
medium 4.3

CVE-2023-22504 json

Affected versions of Atlassian Confluence Server allow remote attackers who have read permissions to a page, but not write permissions, to…

published 2023-05-25 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-26644

cvss
4.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

Affected versions of Atlassian Confluence Server allow remote attackers who have read permissions to a page, but not write permissions, to upload attachments via a Broken Access Control vulnerability in the attachments feature.

Patch / fix

  • Atlassian Confluence Data Center < 1.1.2, >= 7.13.7, >= 7.19.9, >= 8.2.2, >= 8.3.0
  • Atlassian Confluence Server < 1.1.2, >= 7.13.7, >= 7.19.9, >= 8.2.2, >= 8.3.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 4.3 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

  • Atlassian Confluence Data Center
  • Atlassian Confluence Server

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type

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.