CVE-2021-47769Public exploitNetwork attack vector

Session hijacking via stored title-field scripts

Published Jan 15, 2026 · Updated Jan 15, 2026

Stored cross-site scripting in Bdtask Isshue Shopping Cart 3.5 allows remote authenticated users to inject scripts through title fields. The stock, customer, and invoice modules persist the title parameter and render it in previews without safe output encoding. A keeper, manager, or administrator account can plant code that runs during preview, exposing browser sessions and enabling persistent phishing or redirects.

CVSS severity5.1
Medium
EPSS probability0.29%
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 Bdtask Isshue Shopping Cart 3.5 allows remote authenticated users to inject scripts through title fields. The stock, customer, and invoice modules persist the title parameter and render it in previews without safe output encoding. A keeper, manager, or administrator account can plant code that runs during preview, exposing browser sessions and enabling persistent phishing or redirects.

The record

CVE
CVE-2021-47769
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
Bdtask
Product
Isshue
Classifications
CWE-79, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 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=3.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Bdtask · Isshueversion=3.5

Published CVSS scores

4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA: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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web Session Cookie

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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