Perl: Schwachstelle ermöglicht Denial of Service
WID-SEC-2026-2847 · first 14.08.2026 · updated 26.10.2026 · CVSS 5,3
What it is about
Perl ist eine freie, plattformunabhängige und interpretierte Programmiersprache (Skriptsprache). Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Perl ausnutzen, um einen Denial of Service Angriff durchzuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service Angriff durchzuführen
Am I affected?
Affected according to the BSI:
- IBM AIX 7.3
- IBM VIOS 4.1
- Debian Linux
- Amazon Linux 2
- IBM AIX 7.2
- Ubuntu Linux
- Open Source Perl <5.41.9
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source Perl 5.41.9
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- GitHub Security Advisory GHSA-cg68-cm33-8vqv vom 2026-08-13 github.com
- GitHub Issue #22892 vom 2026-08-13 mit PoC github.com
- Ubuntu Security Notice USN-8736-1 vom 2026-09-08 ubuntu.com
- Ubuntu Security Notice USN-8736-2 vom 2026-09-16 ubuntu.com
- IBM Security Bulletin 7289720 vom 2026-09-28 aix.software.ibm.com
- Debian Security Advisory DLA-4821 vom 2026-10-05 lists.debian.org
- Amazon Linux Security Advisory ALAS2-2026-4026 vom 2026-10-25 alas.aws.amazon.com
CVE: CVE-2026-19487
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.