CVE-2021-36912Network attack vector

Contributor-level stored XSS via undisclosed input handling

Published May 6, 2022 · Updated Apr 28, 2026

Stored XSS in Andrea Pernici Google News Sitemap 1.0.16 and earlier allows remote authenticated users to inject scripts into site pages. The published advisory does not identify the affected parameter, storage location, rendering path, or missing neutralization operation. Contributor-level access is required to store a payload, and exploitation requires another user to view the affected content, allowing script execution in that user's browser context.

CVSS severity5.4
Medium
EPSS probability0.56%
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 Andrea Pernici Google News Sitemap 1.0.16 and earlier allows remote authenticated users to inject scripts into site pages. The published advisory does not identify the affected parameter, storage location, rendering path, or missing neutralization operation. Contributor-level access is required to store a payload, and exploitation requires another user to view the affected content, allowing script execution in that user's browser context.

The record

CVE
CVE-2021-36912
Published
May 6, 2022
Updated
Apr 28, 2026
Vendor
Andrea Pernici
Product
Google News Sitemap
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=<= 1.0.16 <=1.0.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Andrea Pernici · Google News Sitemapversion=<= 1.0.16 <=1.0.16

Published CVSS scores

5.4PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4NIST NVDCVSS: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')
T1059.007Command and Scripting Interpreter: JavaScript

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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