CVE-2023-27479

CRITICAL

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions any user with view rights can execute arbitrary Groovy, Python or Veloc...

Affects 1 product across 1 vendor.

CVSS 3.19.9
EPSS1.1%
Percentile66th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, low privileges required, no user interaction needed, can impact systems beyond the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-74: Injection

Parent class for all injection vulnerabilities where attacker-supplied data is interpreted as code or commands.

Related Attack Patterns (CAPEC)
CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
via CWE-74
CAPEC-7 Blind SQL Injection
via CWE-74
CAPEC-8 Buffer Overflow in an API Call
via CWE-74
CAPEC-9 Buffer Overflow in Local Command-Line Utilities
via CWE-74
CAPEC-10 Buffer Overflow via Environment Variables
via CWE-74
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Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

CVE-2023-27479 affects XWiki Platform, allowing users with view rights to execute arbitrary code, leading to full access to the XWiki installation due to improper escaping of UIX parameters.

BSID: BS-2023-GLOBAL-060968-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2023-27479?
CVE-2023-27479 affects XWiki Platform, allowing users with view rights to execute arbitrary code, leading to full access to the XWiki installation due to improper escaping of UIX parameters.
What is the CVSS score for CVE-2023-27479?
CVE-2023-27479 has CVSS 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS: 1.1%.
Is CVE-2023-27479 actively exploited?
No confirmed active exploitation of CVE-2023-27479 as of 2026-09-25.
How do I remediate CVE-2023-27479?
Priority: IMMEDIATE. Advisory: https://jira.xwiki.org/browse/XWIKI-20294 PSIRT: [email protected]
What systems are affected by CVE-2023-27479?
CVE-2023-27479 affects Xwiki Xwiki.
Vulnerability Details
CVE IDCVE-2023-27479
BSIDBS-2023-GLOBAL-060968-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published2023-03-07
Last Modified2026-06-17
ICS Relevance0%
Weakness (CWE)
SourceNVD
Official Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions any user with view rights can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of UIX parameters. A proof of concept exploit is to log in, add an `XWiki.UIExtensionClass` xobject to the user profile page, with an Extension Parameters content containing `label={{/html}} {{async async="true" cached="false" context="doc.reference"}}{{groovy}}println("Hello " + "from groovy!"){{/groovy}}{{/async}}`. Then, navigating to `PanelsCode.ApplicationsPanelConfigurationSheet` (i.e., `<xwiki-host>/xwiki/bin/view/PanelsCode/ApplicationsPanelConfigurationSheet` where `<xwiki-host>` is the URL of your XWiki installation) should not execute the Groovy script. If it does, you will see `Hello from groovy!` displayed on the screen. This vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10-rc-1. Users are advised to upgrade. For users unable to upgrade the issue can be fixed by editing the `PanelsCode.ApplicationsPanelConfigurationSheet` wiki page and making the same modifications as shown in commit `6de5442f3c`.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

An attacker with view rights can exploit this vulnerability by adding an `XWiki.UIExtensionClass` xobject, which allows the execution of arbitrary Groovy, Python, or Velocity code.

Exploitation Likelihood: CRITICAL

Affected Products
VendorProductAffected Versions
Xwiki Xwiki 6.3 > 6.3, < 13.10.11 ≥ 14.0, < 14.4.7 ≥ 14.5, < 14.10
Remediation
View Vendor Advisory →

Remediation Priority: IMMEDIATE

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 1318 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
SHA-512 Audit Hashfffeee0db8a9f9880d62f669b0781115345c12b2a5269f3c6d9a5c32ef88974d86a1188186485c9739a887a9cd82f08d3365f90255805eee533ae7ab492c4ad1
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