[UPDATE] [high] Zammad: Multiple vulnerabilities

highCVE-2026-13229

An attacker can exploit multiple vulnerabilities in Zammad to gain administrator rights, bypass security measures, manipulate data, disclose confidential information, or trigger a denial of service condition.

CSIRTS triage

vendor: Zammad product: Zammad Authentication bypass Privilege escalation Information disclosure Denial of serviceOther

What: Multiple vulnerabilities in Zammad allow attackers to gain administrator rights, bypass security measures, manipulate data, disclose information, or cause denial of service.
Who is affected: All Zammad deployments are affected.
Urgency: High severity; remediation should be prioritized immediately to prevent privilege escalation and data compromise.
Action: Apply available security patches for CVE-2026-13229 and update to a patched version of Zammad.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-08-05
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1981

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-132290.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-13229	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Zammad

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

high[UPDATE] [high] Zammad: Multiple vulnerabilitiescert-bund · 2026-08-05
unknownCVE-2026-13229: Zammad 7.1.0 contains an authenticated improper authorization vulnerability in the ticket arti…nvd · 2026-08-04