GHSA-rcc6-6q2f-m2cw: org.opencms:opencms-core (CVE-2023-42344)

Alkacon OpenCms allows remote unauthenticated attackers to obtain sensitive information

CVSS 7.3 HighEPSS 0.023 · 83rd percentile

Published by the GitHub Advisory Database at 8 May 2026, 06:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
org.opencms:opencms-core	Maven	<10.5.1	10.5.1

Identifiers

GHSA-rcc6-6q2f-m2cw · CVE-2023-42344

Weakness (CWE)

CWE-611

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

OpenCms (Maven package org.opencms:opencms-core) versions before 10.5.1 are vulnerable. A remote attacker without authentication can send a crafted XML request to the CMIS query endpoint, an XML external entity (XXE) attack, and obtain sensitive information. Upgrade to version 10.5.1 or later.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.3	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	GitHub Advisory Database

CISA KEV Not listed.
EPSS 0.023, the 83rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:20 UTC First seen by agentprime
31 Oct 2026, 14:20 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.