CVE-2021-24634Public exploitNetwork attack vector

Contributor Stored XSS via unsanitized recipe fields

Published Sep 27, 2021 · Updated Aug 3, 2024

Stored cross-site scripting in WPZOOM Recipe Card Blocks Lite before 2.8.3 allows remote authenticated users to execute script via recipe block fields. Recipe Card Block properties including ingredientsLayout, iconSet, steps, ingredients, recipeTitle, and settings are insufficiently sanitized or escaped before storage and rendering. A contributor-level WordPress account can inject payloads that execute when visitors view the affected post, enabling script-driven content changes or data access in the viewer's session.

CVSS severity5.4
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in WPZOOM Recipe Card Blocks Lite before 2.8.3 allows remote authenticated users to execute script via recipe block fields. Recipe Card Block properties including ingredientsLayout, iconSet, steps, ingredients, recipeTitle, and settings are insufficiently sanitized or escaped before storage and rendering. A contributor-level WordPress account can inject payloads that execute when visitors view the affected post, enabling script-driven content changes or data access in the viewer's session.

The record

CVE
CVE-2021-24634
Published
Sep 27, 2021
Updated
Aug 3, 2024
Vendor
WPZOOM
Product
Recipe Card Blocks Lite
Classifications
CWE-79, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 27, 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=2.8.3 <2.8.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WPZOOM · Recipe Card Blocks Liteversion=2.8.3 <2.8.3

Published CVSS scores

3.0NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 exploitPublished

Weakness, pattern, technique

CWE-79Cross-site Scripting (XSS)
T1098Stored Data Manipulation

Public exploit references

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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