CVE-2021-24615Public exploitNetwork attack vector

Stored XSS via unvalidated QR setting

Published Oct 18, 2021 · Updated Aug 3, 2024

Stored cross-site scripting in Tan Teng Wechat Reward 1.7 and earlier allows remote attackers to inject script through a QR setting. The upload_wechat_QR settings page accepts and stores the wechatQR value without a CSRF check, sanitization, or output escaping. A logged-in administrator must submit the attacker's request; the stored script then executes on the settings page and all frontend posts.

CVSS severity5.4
Medium
EPSS probability0.40%
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 Tan Teng Wechat Reward 1.7 and earlier allows remote attackers to inject script through a QR setting. The upload_wechat_QR settings page accepts and stores the wechatQR value without a CSRF check, sanitization, or output escaping. A logged-in administrator must submit the attacker's request; the stored script then executes on the settings page and all frontend posts.

The record

CVE
CVE-2021-24615
Published
Oct 18, 2021
Updated
Aug 3, 2024
Vendor
Tan Teng
Product
Wechat Reward
Classifications
CWE-79, CWE-352, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 18, 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=1.7 <=1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tan Teng · Wechat Rewardversion=1.7 <=1.7

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-352Cross-Site Request Forgery (CSRF)
T1189Drive-by Compromise

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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