CVE-2023-6380Network attack vector

User redirection via unsanitized URI parameter

Published Dec 13, 2023 · Updated Aug 28, 2024

Open redirect in the OpenCms Mercury template versions 14 and 15 allows remote attackers to redirect users through crafted URLs. The template accepts the URI parameter as a redirect destination without proper sanitization. Exploitation requires a targeted user to follow an attacker-supplied link, after which the browser is sent to an untrusted site.

CVSS severity6.1
Medium
EPSS probability1.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in the OpenCms Mercury template versions 14 and 15 allows remote attackers to redirect users through crafted URLs. The template accepts the URI parameter as a redirect destination without proper sanitization. Exploitation requires a targeted user to follow an attacker-supplied link, after which the browser is sent to an untrusted site.

The record

CVE
CVE-2023-6380
Published
Dec 13, 2023
Updated
Aug 28, 2024
Vendor
Alkacon Software
Product
OpenCms
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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
  2. Affected versionversion=15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Alkacon Software · OpenCmsversion=14; version=15

Published CVSS scores

6.1Spanish National Cybersecurity Institute, S.A. (INCIBE)CVSS: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.

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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-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001User Execution: Malicious Link

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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