CVE-2026-54260Network attack vector

Authenticated service degradation via unbounded preview filters

Published Jul 1, 2026 · Updated Jul 1, 2026

Denial of service in Wagtail before 7.0.8, 7.1.0 through 7.3.2, and 7.4.0 through 7.4.1 allows remote authenticated users to degrade service. The admin image preview endpoint accepts attacker-controlled filter specifications without restricting operations, causing expensive image rendition processing. Access to Wagtail admin is required; ordinary site visitors cannot reach the condition, and the documented consequence is service degradation rather than data disclosure or modification.

CVSS severity4.3
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Wagtail before 7.0.8, 7.1.0 through 7.3.2, and 7.4.0 through 7.4.1 allows remote authenticated users to degrade service. The admin image preview endpoint accepts attacker-controlled filter specifications without restricting operations, causing expensive image rendition processing. Access to Wagtail admin is required; ordinary site visitors cannot reach the condition, and the documented consequence is service degradation rather than data disclosure or modification.

The record

CVE
CVE-2026-54260
Published
Jul 1, 2026
Updated
Jul 1, 2026
Vendor
Wagtail
Product
Wagtail
Classifications
CWE-400, T1499.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 1, 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=< 7.0.8
  2. Affected versionversion=>= 7.1.0, < 7.3.3
  3. Affected versionversion=>= 7.4.0, < 7.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Wagtail · Wagtailversion=< 7.0.8; version=>= 7.1.0, < 7.3.3; version=>= 7.4.0, < 7.4.2

Published CVSS scores

2.7Python Packaging Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
4.3GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.003Application Exhaustion Flood

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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