CVE-2026-28223 | Wagtail: Improper escaping of HTML (Cross-site Scripting) in simple_translation admin interface

Wagtail is an open source content management system built on Django. Prior to versions 6.3.8, 7.0.6, 7.2.3, and 7.3.1, a stored cross-site scripting (XSS) vulnerability exists on confirmation messages within the wagtail.contrib.simple_translation module. A user with access to the Wagtail admin area may create a page with a specially-crafted title which, when another user performs the "Translate" action, causes arbitrary JavaScript code to run. This could lead to performing actions with that user's credentials. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. This issue has been patched in versions 6.3.8, 7.0.6, 7.2.3, and 7.3.1.

Published: 2026-03-05 Last update: 2026-03-09 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-28223 is rated Low Risk (27.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.03%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-28223

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-21 0.08% 0.03% -0.04%
2 2026-03-10 0.05% 0.08% +0.03%
3 2026-03-06 — 0.05% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-28223

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 0.9 5.2 [email protected]

Weakness enumeration for CVE-2026-28223

GitHub Security Advisory for CVE-2026-28223

GHSA-p4v8-rw59-93cq · Severity: medium · Ecosystem: pip — Wagtail Vulnerable to Cross-site Scripting in simple_translation admin interface

Affected software / configurations for CVE-2026-28223

Vendor Product Version Raw CPE
torchbox wagtail < 6.3.8 cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*
torchbox wagtail >= 6.4, < 7.0.6 cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*
torchbox wagtail >= 7.1, < 7.2.3 cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*
torchbox wagtail 7.3 cpe:2.3:a:torchbox:wagtail:7.3:-:*:*:*:*:*:*
torchbox wagtail 7.3 cpe:2.3:a:torchbox:wagtail:7.3:rc1:*:*:*:*:*:*

References for CVE-2026-28223

cvelogic Threat Intelligence