CVE-2023-35157Network attack vector

Reflected XSS via unescaped attachment name

Published Jun 23, 2023 · Updated Nov 27, 2024

Reflected XSS in XWiki Platform 3.2-milestone-3 and later before 14.10.6, or 15.0-rc-0 and later before 15.1-rc-1, allows attackers to execute script. XWikiAction.localizePlainOrKey inserted a localized deletion error containing the attacker-controlled attachment name into HTML without XML escaping. Exploitation requires the victim's CSRF token or a victim who ignores the missing-token warning, and script runs in that victim's session.

CVSS severity8.4
High
EPSS probability0.63%
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 XWiki Platform 3.2-milestone-3 and later before 14.10.6, or 15.0-rc-0 and later before 15.1-rc-1, allows attackers to execute script. XWikiAction.localizePlainOrKey inserted a localized deletion error containing the attacker-controlled attachment name into HTML without XML escaping. Exploitation requires the victim's CSRF token or a victim who ignores the missing-token warning, and script runs in that victim's session.

The record

CVE
CVE-2023-35157
Published
Jun 23, 2023
Updated
Nov 27, 2024
Vendor
CryptPad
Product
XWiki Platform
Classifications
CWE-80, CWE-79, T1189
Attack vector
network
Privileges
authenticated

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

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Is a vulnerable build present?

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

  1. Affected versionversion=>= 15.0-rc-0, < 15.1-rc-1
  2. Affected versionversion=>= 3.2-milestone-3, < 14.10.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CryptPad · XWiki Platformversion=>= 15.0-rc-0, < 15.1-rc-1; version=>= 3.2-milestone-3, < 14.10.6

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
8.4GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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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