CVE-2025-12848Network attack vector

Stored XSS via unescaped filename rendering

Published Nov 26, 2025 · Updated Mar 26, 2026

Stored XSS in Drupal Webform Multiple File Upload 7.x-1.0 through 7.x-1.6 allows remote attackers to run scripts via filenames. The bundled jQuery MultiFile renderer inserts a selected filename into display markup without encoding HTML metacharacters. Exploitation requires an unauthenticated upload to a Multifile field with file-type validation disabled and a victim who views the filename.

CVSS severity7.0
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Drupal Webform Multiple File Upload 7.x-1.0 through 7.x-1.6 allows remote attackers to run scripts via filenames. The bundled jQuery MultiFile renderer inserts a selected filename into display markup without encoding HTML metacharacters. Exploitation requires an unauthenticated upload to a Multifile field with file-type validation disabled and a victim who views the filename.

The record

CVE
CVE-2025-12848
Published
Nov 26, 2025
Updated
Mar 26, 2026
Vendor
OAuth.js
Product
Drupal core
Classifications
CWE-79, CAPEC-63, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 2026Record 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=7.x-1.0 <=7.x-1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OAuth.js · Drupal coreversion=7.x-1.0 <=7.x-1.6

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.0Drupal.orgCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/S:N/R:U/V:D/RE:L/U:Amber

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)
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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