CVE-2023-41691Network attack vector

Reflected XSS via unsanitized transaction action

Published Sep 29, 2023 · Updated Apr 28, 2026

Reflected XSS in pensopay Payments 6.3.1 and earlier allows remote attackers to execute browser script through a crafted request. The manual transaction-actions handler fails to sanitize the attacker-controlled pensopay_action parameter before reflecting its value. Exploitation requires a victim to follow the crafted request, enabling script execution in the site's origin and access to browser-visible data.

CVSS severity7.1
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in pensopay Payments 6.3.1 and earlier allows remote attackers to execute browser script through a crafted request. The manual transaction-actions handler fails to sanitize the attacker-controlled pensopay_action parameter before reflecting its value. Exploitation requires a victim to follow the crafted request, enabling script execution in the site's origin and access to browser-visible data.

The record

CVE
CVE-2023-41691
Published
Sep 29, 2023
Updated
Apr 28, 2026
Vendor
pensopay
Product
pensopay Payments
Classifications
CWE-79, CAPEC-591, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 29, 2023CVE 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=n/a <=6.3.1 changes=[{"at":"6.3.2","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

pensopay · pensopay Paymentsversion=n/a <=6.3.1 changes=[{"at":"6.3.2","status":"unaffected"}]

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
T1204.001Malicious Link

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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