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CVE-2022-26138 (GCVE-0-2022-26138)

Vulnerability from cvelistv5 – Published: 2022-07-20 17:25 – Updated: 2026-01-12 21:22
VLAI CISA Shadowserver Previdian
Summary
The Atlassian Questions For Confluence app for Confluence Server and Data Center creates a Confluence user account in the confluence-users group with the username disabledsystemuser and a hardcoded password. A remote, unauthenticated attacker with knowledge of the hardcoded password could exploit this to log into Confluence and access all content accessible to users in the confluence-users group. This user account is created when installing versions 2.7.34, 2.7.35, and 3.0.2 of the app.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-28 21:47 UTC
CWE
  • CWE-798 - Use of Hard-coded Credentials (CWE-798)
Assigner
References
Impacted products
Vendor Product Version CPE status
Atlassian Questions For Confluence Affected: 2.7.34
Affected: 2.7.35
Affected: 3.0.2
guessed Create a notification for this product.
Date Public
2022-07-20 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b958228e-f57f-4e06-8a89-04e63761c96b

Vulnerability ID: CVE-2022-26138

Status: Confirmed

Status Updated: 2022-07-29 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2022-07-29
Asserted: 2022-07-29
Scope
Notes: KEV entry: Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability | Affected: Atlassian / Confluence | Description: Atlassian Questions For Confluence App has hard-coded credentials, exposing the username and password in plaintext. A remote unauthenticated attacker can use these credentials to log into Confluence and access all content accessible to users in the confluence-users group. | Required action: Apply updates per vendor instructions. | Due date: 2022-08-19 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://confluence.atlassian.com/doc/questions-for-confluence-security-advisory-2022-07-20-1142446709.html; https://nvd.nist.gov/vuln/detail/CVE-2022-26138
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-798
Feed CISA Known Exploited Vulnerabilities Catalog
Product Confluence
Due Date 2022-08-19
Date Added 2022-07-29
Vendorproject Atlassian
Vulnerabilityname Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 13:25 UTC | Updated: 2026-02-06 07:53 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ebd01fce-4f97-4258-ad2b-f9508b66f226

Vulnerability ID: CVE-2022-26138

Status: Confirmed

Status Updated: 2026-09-06 00:00 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2023-10-14
Asserted: 2023-10-14
Last Seen: 2026-09-06
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Atlassian / Confluence | Class: other-software | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: yes | Honeypot connections on 2026-09-06: 40
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 9
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class other-software
7D Avg 3
Vendor Atlassian
30D Avg 1
90D Avg 2
Product Confluence
Cisa Kev yes
Connections 40
Observation Date 2026-09-06
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-07-01 05:54 UTC | Updated: 2026-09-08 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 7991a9ba-0cc2-405b-b5af-28f917cad46d

Vulnerability ID: CVE-2022-26138

Status: Confirmed

Status Updated: 2022-07-29 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2022-07-29
Asserted: 2022-07-29
Scope
Notes: KEVIntel entry: The Atlassian Questions For Confluence app for Confluence Server and Data Center creates a Confluence user account in the confluence-users group... | Affected: Atlassian / Questions For Confluence | CVSS: 9.8 (CRITICAL) | EPSS: 0.9817 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title The Atlassian Questions For Confluence app for Confluence Server and Data Center creates a Confluence user account in the confluence-users group...
Vendor Atlassian
Product Questions For Confluence
Added Date 2022-07-29T00:00:00.000Z
Cvss Score 9.8
Epss Score 0.9817
Cvss Severity CRITICAL
Epss Percentile 0.99906
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 11:13 UTC | Updated: 2026-06-23 11:13 UTC
Show details on NVD website
To clipboard 

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}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.