CVE-2025-48051Network attack vector

Script execution via DOM text reinterpretation

Published May 15, 2025 · Updated May 15, 2025

DOM-based XSS in powertip.ts in Lichess Lila before ab0beaf allows remote attackers to execute script via crafted DOM text. The imagePowertip preRender callback interpolates data-src, data-width, and data-height values into an img string assigned to #image-powertip.innerHTML. Exploitation requires attacker control of those sanitized DOM attribute values and a user to trigger the tooltip, allowing script to run in the affected page's browser context.

CVSS severity6.1
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM-based XSS in powertip.ts in Lichess Lila before ab0beaf allows remote attackers to execute script via crafted DOM text. The imagePowertip preRender callback interpolates data-src, data-width, and data-height values into an img string assigned to #image-powertip.innerHTML. Exploitation requires attacker control of those sanitized DOM attribute values and a user to trigger the tooltip, allowing script to run in the affected page's browser context.

The record

CVE
CVE-2025-48051
Published
May 15, 2025
Updated
May 15, 2025
Vendor
Lichess
Product
Lila
Classifications
CWE-116, CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2025CVE publishedPublication date reported by the CVE source.
  2. May 15, 2025Record 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=0 <ab0beaf0ad671761705d9274663c5dc450608527

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Lichess · Lilaversion=0 <ab0beaf0ad671761705d9274663c5dc450608527

Published CVSS scores

4.7MITRECVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1NIST NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-116Improper Encoding or Escaping of Output
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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