CVE-2026-55807Network attack vector

Authenticated SSRF via unrestricted oEmbed URL discovery

Published Jul 10, 2026 · Updated Jul 10, 2026

SSRF in Drupal core's Media oEmbed support allows remote authenticated users to make server-side requests to arbitrary URLs. The URL-discovery path accepts an oEmbed discovery target and directs Drupal to request it without restricting the destination host. Affected releases are before 10.5.12, 10.6.0 through 10.6.10, 11.0.x, 11.1.x, 11.2.0 through 11.2.13, and 11.3.0 through 11.3.11; provider-list discovery is not the affected path.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

SSRF in Drupal core's Media oEmbed support allows remote authenticated users to make server-side requests to arbitrary URLs. The URL-discovery path accepts an oEmbed discovery target and directs Drupal to request it without restricting the destination host. Affected releases are before 10.5.12, 10.6.0 through 10.6.10, 11.0.x, 11.1.x, 11.2.0 through 11.2.13, and 11.3.0 through 11.3.11; provider-list discovery is not the affected path.

The record

CVE
CVE-2026-55807
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
Avatar Uploader Project
Product
Drupal core
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 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=0.0.0 <10.5.12
  2. Affected versionversion=0.0.0 <11.0.*
  3. Affected versionversion=0.0.0 <11.1.*
  4. Affected versionversion=10.6.0 <10.6.11
  5. Affected versionversion=11.2.0 <11.2.14
  6. Affected versionversion=11.3.0 <11.3.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Avatar Uploader Project · Drupal coreversion=0.0.0 <10.5.12; version=0.0.0 <11.0.*; version=0.0.0 <11.1.*; version=10.6.0 <10.6.11; version=11.2.0 <11.2.14; version=11.3.0 <11.3.12

Published CVSS scores

No CVSS assessment is available in this record.

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

T1190Exploit Public-Facing Application

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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