CVE-2022-4587Network attack vector

Cross-site scripting via unescaped username

Published Dec 17, 2022 · Updated Apr 15, 2025

Cross-site scripting in Opencaching Deutschland e.V. oc-server3 allows remote attackers to execute script via the username parameter on the login page. The htdocs/templates2/ocstyle/login.tpl template inserts the username directly into an HTML input value without escaping, allowing reflected script injection. Exploitation requires a victim to submit or load a crafted login request; the demonstrated impact is client-side script execution with limited integrity and no direct service outage.

CVSS severity5.4
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Opencaching Deutschland e.V. oc-server3 allows remote attackers to execute script via the username parameter on the login page. The htdocs/templates2/ocstyle/login.tpl template inserts the username directly into an HTML input value without escaping, allowing reflected script injection. Exploitation requires a victim to submit or load a crafted login request; the demonstrated impact is client-side script execution with limited integrity and no direct service outage.

The record

CVE
CVE-2022-4587
Published
Dec 17, 2022
Updated
Apr 15, 2025
Vendor
Opencaching Deutschland e.V.
Product
oc-server3
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 17, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Opencaching Deutschland e.V. · oc-server3version=n/a

Published CVSS scores

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

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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')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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