Page generated: 08 Nov 2026, 07:36 UTC
← Dashboard

CVE-2023-22515

Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauthorized Confluence administrator accounts …

Read full description
Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauthorized Confluence administrator accounts and access Confluence instances. 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: 99.22%: +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: 15 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

MSSP Alert
Press · 30 Sep 2026, 13:09 · Feral Wolf ransomware targets Russian firms using Confluence flaws - MSSP Alert
GreyNoise
Press · 26 Feb 2025, 08:00 · GreyNoise Detects Active Exploitation of CVEs Mentioned in Black Basta’s Leaked Chat Logs - GreyNoise
CyberSecurityNews
Press · 13 Nov 2024, 08:00 · CISA, NSA, & FBI Release List of 15 Most Exploited Vulnerabilities in 2023 - CyberSecurityNews
Rescana
Press · 03 Oct 2024, 07:00 · Critical Vulnerability CVE-2023-22515 in Atlassian Confluence: Exploitation, Impact, and Mitigation Strategies - Rescana
Qualys
Press · 15 Nov 2023, 08:00 · Atlassian Confluence Broken Access Control Vulnerability (CVE-2023-22515) - Qualys
See all 15 source documents
The Hacker News
Press · 10 Nov 2023, 08:00 · Alert: 'Effluence' Backdoor Persists Despite Patching Atlassian Confluence Servers - The Hacker News
Rapid7
Press · 06 Nov 2023, 08:00 · Rapid7-Observed Exploitation of Atlassian Confluence CVE-2023-22518 - Rapid7
Kaspersky
Press · 23 Oct 2023, 07:00 · Vulnerability in Confluence Data Center and Confluence Server - Kaspersky
Dark Reading
Press · 11 Oct 2023, 07:00 · Microsoft: Chinese APT Behind Atlassian Confluence Attacks; PoCs Appear - Dark Reading
The Hacker News
Press · 11 Oct 2023, 07:00 · Microsoft Warns of Nation-State Hackers Exploiting Critical Atlassian Confluence Vulnerability - The Hacker News
GreyNoise
Press · 10 Oct 2023, 07:00 · CVE-2023-22515: Critical Privilege Escalation Vulnerability in Atlassian's Confluence - GreyNoise
SOC Prime
Press · 05 Oct 2023, 07:00 · CVE-2023-22515 Detection: A Critical Zero-Day in Confluence Data Center & Server Under Active Exploitation - SOC Prime
The Hacker News
Press · 05 Oct 2023, 07:00 · Atlassian Confluence Hit by New Actively Exploited Zero-Day – Patch Now - The Hacker News
Cloudflare Blog
Press · 04 Oct 2023, 07:00 · All Cloudflare customers protected from the Atlassian Confluence CVE-2023-22515 - Cloudflare Blog
Rapid7
Press · 04 Oct 2023, 07:00 · CVE-2023-22515: Zero-Day Privilege Escalation in Confluence Server and Data Center - Rapid7

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

2

Public exploit entries / repo candidates

See 2 repos with metrics
RepositoryStarsForksLanguageUpdated
getdrive/PoC7315Ruby12 Aug 2024, 07:34
j3seer/CVE-2023-22515-POC92—10 Oct 2023, 19:59
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 99.2%
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
04 Oct 2023, 07:00
Published
04 Oct 2023, 14:00
Added to the CISA KEV catalog
05 Oct 2023, 00:00
Latest press mention
30 Sep 2026, 13:09
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
2 repositories