CVE-2021-26084 (GCVE-0-2021-26084)

Vulnerability from cvelistv5 – Published: 2021-08-30 06:30 – Updated: 2025-10-21 23:25
VLAI? CISA
Summary
In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • Remote Code Execution
Assigner
References
Impacted products
Vendor Product Version
Atlassian Confluence Server Affected: unspecified , < 6.13.23 (custom)
Affected: 6.14.0 , < unspecified (custom)
Affected: unspecified , < 7.4.11 (custom)
Affected: 7.5.0 , < unspecified (custom)
Affected: unspecified , < 7.11.6 (custom)
Affected: 7.12.0 , < unspecified (custom)
Affected: unspecified , < 7.12.5 (custom)
Create a notification for this product.
    Atlassian Confluence Data Center Affected: unspecified , < 6.13.23 (custom)
Affected: 6.14.0 , < unspecified (custom)
Affected: unspecified , < 7.4.11 (custom)
Affected: 7.5.0 , < unspecified (custom)
Affected: unspecified , < 7.11.6 (custom)
Affected: 7.12.0 , < unspecified (custom)
Affected: unspecified , < 7.12.5 (custom)
Create a notification for this product.
CISA Known Exploited Vulnerability
Data from the CISA Known Exploited Vulnerabilities Catalog

Date added: 2021-11-03

Due date: 2021-11-17

Required action: Apply updates per vendor instructions.

Used in ransomware: Known

Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-26084

Show details on NVD website
To clipboard 

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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.