CVE-2026-76758Network attack vectorHinoki check available

Administrative data disclosure and modification

Published Sep 2, 2026 · Updated Sep 2, 2026

Improper input validation in Drupal Link content parser all versions allows remote authenticated users to read and alter data via network requests. Drupal has not published the affected code path or the invalid input operation that exposes confidential data or permits modification. Exploitation requires administrative privileges and complex conditions; no availability impact is reported.

CVSS severity5.9
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper input validation in Drupal Link content parser all versions allows remote authenticated users to read and alter data via network requests. Drupal has not published the affected code path or the invalid input operation that exposes confidential data or permits modification. Exploitation requires administrative privileges and complex conditions; no availability impact is reported.

The record

CVE
CVE-2026-76758
Published
Sep 2, 2026
Updated
Sep 2, 2026
Vendor
OAuth.js
Product
Link content parser
Classifications
CWE-20
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 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=*.*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

OAuth.js · Link content parserversion=*.*

Published CVSS scores

5.9CISA ADPCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

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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