CVE-2021-32681Network attack vector

Stored XSS via unescaped StreamField block output

Published Jun 17, 2021 · Updated Aug 3, 2024

Stored XSS in Wagtail before 2.11.8, 2.12 through 2.12.4, and 2.13 through 2.13.1 allows remote authenticated users to run scripts. The include_block template tag emits plain-text StreamField values without HTML escaping when CharBlock, TextBlock, or another FieldBlock has no rendering template. Editor access and direct rendering of an affected block are required, and viewing the resulting page executes the injected HTML or script.

CVSS severity5.4
Medium
EPSS probability1.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Wagtail before 2.11.8, 2.12 through 2.12.4, and 2.13 through 2.13.1 allows remote authenticated users to run scripts. The include_block template tag emits plain-text StreamField values without HTML escaping when CharBlock, TextBlock, or another FieldBlock has no rendering template. Editor access and direct rendering of an affected block are required, and viewing the resulting page executes the injected HTML or script.

The record

CVE
CVE-2021-32681
Published
Jun 17, 2021
Updated
Aug 3, 2024
Vendor
Wagtail
Product
Wagtail
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 17, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=< 2.11.8
  2. Affected versionversion=>= 2.12, <= 2.12.4
  3. Affected versionversion=>= 2.13, <= 2.13.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wagtail · Wagtailversion=< 2.11.8; version=>= 2.12, <= 2.12.4; version=>= 2.13, <= 2.13.1

Published CVSS scores

5.4GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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')
T1059.007JavaScript

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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