CVE-2023-35159Public exploitNetwork attack vector

Browser script execution via unsanitized redirect URL

Published Jun 23, 2023 · Updated Nov 27, 2024

Reflected XSS in the deletespace template in XWiki Platform allows remote attackers to run script in a user's browser via a crafted URL. In deletespace.vm, the xredirect request value was assigned directly to the cancellation link's href without URL-scheme sanitization. No authentication is required, but a user must follow the malicious link; script executes in that user's XWiki origin and can act with that user's rights.

CVSS severity9.6
Critical
EPSS probability2.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in the deletespace template in XWiki Platform allows remote attackers to run script in a user's browser via a crafted URL. In deletespace.vm, the xredirect request value was assigned directly to the cancellation link's href without URL-scheme sanitization. No authentication is required, but a user must follow the malicious link; script executes in that user's XWiki origin and can act with that user's rights.

The record

CVE
CVE-2023-35159
Published
Jun 23, 2023
Updated
Nov 27, 2024
Vendor
CryptPad
Product
XWiki Platform
Classifications
CWE-79, CWE-87, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 15.0-rc-1, < 15.1-rc-1
  2. Affected versionversion=>= 3.4-milestone-1, < 14.10.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CryptPad · XWiki Platformversion=>= 15.0-rc-1, < 15.1-rc-1; version=>= 3.4-milestone-1, < 14.10.5

Published CVSS scores

9.6GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
6.1NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-87Improper Neutralization of Alternate XSS Syntax
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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