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CVE-2023-42343

Severity6.1 Medium CVSS 3.1
Fixed in16.0
WeaknessCross-site scripting (CWE-79)
Published8 May 2026
Updated28 Oct 2026

Description

A Cross Site Scripting vulnerability in Alkacon OpenCms before 10.5.1 exists via cmis-online/type.

Exploitation status

Working exploit published

A reviewed exploit catalogue lists ready-to-run exploit code for this CVE.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC 1 indexed Published artifacts you can open, in Nuclei.
  • EPSS 0.59% chance in 30 days
IndexArtifactStarsFirst seen
Nuclei OpenCMS - Cross-Site Scripting

Waratek protection

Mitigation candidate

A kind of vulnerability Waratek's rules address, with exploit code published or exploitation reported. No rule exists and none is planned yet. The decision below says what we found to build a rule from.

  • Protection none
  • Action unverified
  • Review automated Inferred
  • Record active
Decided by The affected package being open source on Maven, so the fix can be read
Finding This CVE affects an open-source Java library published on Maven Central (Maven packages: org.opencms:opencms-core), so it is squarely in ARMR's territory and the source needed to understand the defect is public. That makes it a candidate for an ARMR patch rule. No rule exists and none is scheduled: the diff between the affected and fixed versions has not been read, and a closer look may find no hook point ARMR can act on.

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.opencms:opencms-core 0 16.0 unbounded

Products and versions

1 product, 1 version entry
SourceVendorProductSchemeAffected versions
osv org.opencms opencms-core generic < 16.0

References

URLTags
https://github.com/alkacon/opencms-core PACKAGE
https://labs.watchtowr.com/xxe-you-can-depend-on-me-opencms WEB
https://labs.watchtowr.com/xxe-you-can-depend-on-me-opencms/

Timeline

Published2026-05-08By the CVE Program.
NVD record modified2026-10-28NVD's own last-modified date for this record.