CVE-2020-9056

Browser script execution via unsanitized stored content

Published Apr 10, 2020 · Updated Sep 17, 2024

Stored cross-site scripting in Periscope Holdings BuySpeed 14.5 allows local users to execute JavaScript in another user's browser. The application stores attacker-supplied JavaScript and later renders it without sanitization; the affected input field and endpoint are undisclosed. Authenticated application access and a second user viewing the stored content are required, enabling website redirection or disruption of the viewed session.

CVSS severity5.4
Medium
EPSS probability0.64%
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 Periscope Holdings BuySpeed 14.5 allows local users to execute JavaScript in another user's browser. The application stores attacker-supplied JavaScript and later renders it without sanitization; the affected input field and endpoint are undisclosed. Authenticated application access and a second user viewing the stored content are required, enabling website redirection or disruption of the viewed session.

The record

CVE
CVE-2020-9056
Published
Apr 10, 2020
Updated
Sep 17, 2024
Vendor
Periscope Holdings
Product
BuySpeed
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 10, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=14.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Periscope Holdings · BuySpeedversion=14.5

Published CVSS scores

3.9CERT/CCCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
3.2CERT/CC Vulnerability Notes DatabaseAV:L/AC:L/Au:S/C:N/I:P/A:P
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:L
2.9CERT/CC Vulnerability Notes DatabaseAV:L/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:U/RC:C

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007JavaScript/JScript

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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