CVE-2026-54263Network attack vector

Privileged actions via HTML-typed error reflection

Published Jul 1, 2026 · Updated Jul 1, 2026

Reflected XSS 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 perform admin actions. The admin image URL output view returns attacker-controlled error content with an HTML content type, so browsers interpret injected markup as script. A limited-permission editor must induce a higher-privileged admin user to open the crafted URL; ordinary site visitors cannot reach the endpoint.

CVSS severity7.3
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS 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 perform admin actions. The admin image URL output view returns attacker-controlled error content with an HTML content type, so browsers interpret injected markup as script. A limited-permission editor must induce a higher-privileged admin user to open the crafted URL; ordinary site visitors cannot reach the endpoint.

The record

CVE
CVE-2026-54263
Published
Jul 1, 2026
Updated
Jul 1, 2026
Vendor
Wagtail
Product
Wagtail
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

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

7.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:R/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.

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

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

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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