Alkacon OpenCMS CSV Injection via New User module

published 2019-05-08 7 y ago modified 2026-06-17 4 mo ago also GHSA-q693-v7qf-p4xj , EUVD-2019-3485

cvss: 7.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits: 0; none known

Alkacon OpenCMS v10.5.4 and before is affected by CSV (aka Excel Macro) Injection in the module New User (/opencms/system/workplace/admin/accounts/user_new.jsp) via the First Name or Last Name.

Patch / fix

fixed in 1

maven org.opencms:opencms-core 11.0.0

Exploit prediction

1.00% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/alkacon/opencms-core/issues/636 referenced PoC, tagged "exploit" by a source, unverified
openwall.com https://www.openwall.com/lists/oss-security/2019/05/05/2 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.8	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P
GitHub	3.0	7.8	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	org.opencms:opencms-core	<11.0.0	11.0.0

Classification

Weakness

CWE-1236 Improper Neutralization of Formula Elements in a CSV File

References

github.com /alkacon/opencms-core/issues/636
web, exploit, third-party-advisory
openwall.com /lists/oss-security/2019/05/05/2
web, exploit, mailing-list, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2019-11819
advisory
github.com /alkacon/opencms-core
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary