Page generated: 07 Nov 2026, 04:24 UTC
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CVE-2023-22518

All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attack…

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All versions of Confluence Data Center and Server are affected by this unexploited vulnerability. This Improper Authorization vulnerability allows an unauthenticated attacker to reset Confluence and create a Confluence instance administrator account. Using this account, an attacker can then perform all administrative actions that are available to Confluence instance administrator leading to - but not limited to - full loss of confidentiality, integrity and availability.  Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue.
CVSS 10.0 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
9.0/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 10: +1.50
  • Fresh EPSS: 100.00%: +0.50

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 13 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Google Cloud
Press · 21 Mar 2024, 07:00 · Bringing Access Back — Initial Access Brokers Exploit F5 BIG-IP (CVE-2023-46747) and ScreenConnect - Google Cloud
Rapid7
Press · 22 Dec 2023, 08:00 · Metasploit Weekly Wrap-Up: Dec. 22, 2023 - Rapid7
Arctic Wolf
Press · 07 Dec 2023, 08:00 · Recommendations CVE-2023-22523, CVE-2022-1471, CVE-2023-22524, and CVE-2023-22522 - Arctic Wolf
The Hacker News
Press · 10 Nov 2023, 08:00 · Alert: 'Effluence' Backdoor Persists Despite Patching Atlassian Confluence Servers - The Hacker News
www.trendmicro.com
Press · 10 Nov 2023, 08:00 · Cerber Ransomware Exploits Atlassian Confluence Vulnerability CVE-2023-22518 - www.trendmicro.com
See all 13 source documents
TechTarget
Press · 08 Nov 2023, 08:00 · Atlassian Confluence vulnerability under widespread attack - TechTarget
The Record from Recorded Future News
Press · 07 Nov 2023, 08:00 · Atlassian confirms ransomware is exploiting latest Confluence bug - The Record from Recorded Future News
Security Affairs
Press · 06 Nov 2023, 08:00 · Critical Confluence flaw exploited in ransomware attacks - Security Affairs
Zscaler
Press · 06 Nov 2023, 08:00 · Adversaries exploit Confluence vulnerability to deploy ransomware - Zscaler
Rapid7
Press · 06 Nov 2023, 08:00 · Rapid7-Observed Exploitation of Atlassian Confluence CVE-2023-22518 - Rapid7
BleepingComputer
Press · 06 Nov 2023, 08:00 · Critical Atlassian Confluence bug exploited in Cerber ransomware attacks - BleepingComputer
SentinelOne
Press · 02 Nov 2023, 07:00 · C3RB3R Ransomware: Exploiting CVE-2023-22518 - SentinelOne
BleepingComputer
Press · 31 Oct 2023, 07:00 · Atlassian warns of critical Confluence flaw leading to data loss - BleepingComputer

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 9.0 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 10; EPSS 100.0%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:49.717973+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
31 Oct 2023, 07:00
Published
31 Oct 2023, 14:30
Added to the CISA KEV catalog
07 Nov 2023, 00:00
Latest press mention
21 Mar 2024, 07:00
Score calculated
05 Nov 2026, 13:58