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CVE-2022-26138

97
FAUCET Score

CVE-2022-26138 is a critical vulnerability affecting Atlassian Questions For Confluence app versions 2.7.34, 2.7.35, and 3.0.2, which impacts Confluence Server and Data Center. It involves a hardcoded password for a 'disabledsystemuser' account, allowing unauthenticated attackers to gain full access to Confluence content. With a CVSS score of 9.8, this flaw is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. This vulnerability is actively exploited in the wild, as confirmed by its presence in the KEV catalog, and has garnered significant community discussion and media coverage, indicating widespread awareness and potential for further exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
2.7.34CPE matchmatch criteria
cpe:2.3:a:atlassian:questions_for_confluence:2.7.34:*:*:*:*:*:*:*
2.7.35CPE matchmatch criteria
cpe:2.3:a:atlassian:questions_for_confluence:2.7.35:*:*:*:*:*:*:*
3.0.2CPE matchmatch criteria
cpe:2.3:a:atlassian:questions_for_confluence:3.0.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
98.17%
Probability of exploitation in next 30 days
EPSS Percentile
99.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Jul 29, 2022
Nuclei: CVE-2022-26138 · Jul 21, 2022
This CVE's current EPSS score of 0.9817 is in the 99th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
confluence.atlassian.com / doc/confluence-security-advisory-2022-07-20-1142446709.html
Vendor Advisory
jira.atlassian.com / browse/CONFSERVER-79483
Issue TrackingPatchVendor Advisory