CVE-2023-22527
A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected…
- Severity
- 9.8 / 10
- Critical · CVSS 3.1
- Exploit chance (EPSS)
- 99.98%
- Chance of exploitation in the next 30 days. Higher than 99.98% of scored vulnerabilities.
- Known exploited
- Yes
- In CISA's catalog since Jan 24, 2024
- Weakness
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
- Fix
- None yet
- No fixed version published
Description
A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action.
Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. However, Atlassian recommends that customers take care to install the latest version to protect their instances from non-critical vulnerabilities outlined in Atlassian’s January Security Bulletin.
How to fix
No fixed version has been published yet. Until one is, remove or replace the package, or turn off or isolate the affected feature. This page updates when a fix ships.
Severity breakdown
CVSS 3.1 9.8
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
- High
- Integrity
- High
- Availability
- High
Weakness
CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
How to prevent it
- Requirements: Programming languages and supporting technologies might be chosen which are not subject to these issues.
- Implementation: Utilize an appropriate mix of allowlist and denylist parsing to filter control-plane syntax from all input.
CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
How to prevent it
- Requirements: Programming languages and supporting technologies might be chosen which are not subject to these issues.
- Implementation: Utilize an appropriate mix of allowlist and denylist parsing to filter control-plane syntax from all input.
References
Advisories
Exploits and evidence
Other links
Timeline
- Published
- Added to CISA's Known Exploited Vulnerabilities catalog
- Remediation due for U.S. federal agencies
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-j8rh-479h-cp32 Axios: Header Injection via Inherited headers After Minimal Interceptor | Medium | Same weakness, CWE-74 |
| GHSA-4hqw-qxg8-jxx2 Axios: Fetch Adapter Header Injection via Inherited FormData getHeaders | Medium | Same weakness, CWE-74 |
| GHSA-h58c-xccx-75m3 Coder: Stored HTML injection via unescaped ApplicationName and LogoURL appearance settings | Medium | Same weakness, CWE-74 |
| GHSA-5rw4-4665-cvwf Froxlor DomainZones.add allows DNS zone-file RR injection via record/type fields | Medium | Same weakness, CWE-74 |
| GHSA-jm78-9fvv-mhgr GitPython: git-config OPTION-name injection via =/#/whitespace bypasses name validator, enabling forged core.sshCommand/hooksPath (RCE) | High | Same weakness, CWE-74 |
| EEF-CVE-2026-68747 CSS sanitizer allowlist bypass in html_sanitize_ex via non-declaration input | Medium | Same weakness, CWE-74 |
| GHSA-9473-5f9j-94wq Nuxt: Server-Side Remote Code Execution via Runtime Template Injection in Nuxt Server Island Props | High | Same weakness, CWE-74 |
| GHSA-v3r7-h72x-cjcm undici vulnerable to cookie attribute injection via unsanitized domain and unparsed setCookie fields | Medium | Same weakness, CWE-74 |
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