# Zammad vulnerabilities > Zammad has 80 published vulnerabilities across 1 product in our catalogue. 2 of them are on the list of flaws known to be exploited, so criminals are using them now. The most affected product is Zammad, with 80. If you run Zammad software, patch the exploited flaws first. Canonical page: https://www.precursorintelligence.com/vendors/zammad ## At a glance - **Published vulnerabilities:** 80 - **Known to be exploited:** 2 - **Products:** 1 - **Versions:** 85 - **Most recently added to the known-exploited list:** [CVE-2026-102489](https://www.precursorintelligence.com/what-is/cve-2026-102489), 2 October 2026. We keep watching the list. ## Which Zammad products have the most vulnerabilities? - [Zammad](https://www.precursorintelligence.com/product/zammad/zammad): 80 published vulnerabilities, 85 versions Each product page lists its own known-exploited flaws. ## Which Zammad vulnerabilities are being exploited? 2 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2026-102489](https://www.precursorintelligence.com/what-is/cve-2026-102489): Zammad GmbH Zammad Session Fixation Vulnerability. Critical, CVSS 9.4, chance of use in 30 days 1.3%, known exploited since 2 October 2026. - [CVE-2026-102490](https://www.precursorintelligence.com/what-is/cve-2026-102490): Zammad GmbH Zammad Improper Privilege Management Vulnerability. Critical, CVSS 9.4, chance of use in 30 days 0.5%, known exploited since 2 October 2026. ## Which Zammad flaws are most likely to be used? Ranked by the latest exploit-likelihood forecast (the chance each flaw is used in an attack in the next 30 days): - [CVE-2021-42090](https://www.precursorintelligence.com/what-is/cve-2021-42090): 2.3%, Critical (CVSS 9.8) - [CVE-2021-42094](https://www.precursorintelligence.com/what-is/cve-2021-42094): 1.9%, Critical (CVSS 9.8) - [CVE-2017-5619](https://www.precursorintelligence.com/what-is/cve-2017-5619): 1.5%, Critical (CVSS 9.8) - [CVE-2018-1000154](https://www.precursorintelligence.com/what-is/cve-2018-1000154): 1.5%, Medium (CVSS 6.1) - [CVE-2021-35298](https://www.precursorintelligence.com/what-is/cve-2021-35298): 1.5%, Medium (CVSS 6.1) - [CVE-2020-26030](https://www.precursorintelligence.com/what-is/cve-2020-26030): 1.4%, Critical (CVSS 9.8) - [CVE-2021-42093](https://www.precursorintelligence.com/what-is/cve-2021-42093): 1.3%, High (CVSS 7.2) - [CVE-2019-1010018](https://www.precursorintelligence.com/what-is/cve-2019-1010018): 1.3%, Medium (CVSS 6.1) - [CVE-2026-102489](https://www.precursorintelligence.com/what-is/cve-2026-102489): 1.3%, Critical (CVSS 9.4), known exploited - [CVE-2021-35301](https://www.precursorintelligence.com/what-is/cve-2021-35301): 1.2%, Medium (CVSS 5.3) ## All Zammad products we track 1 products with at least one tracked version, most vulnerabilities first: - [Zammad](https://www.precursorintelligence.com/product/zammad/zammad): 80 vulnerabilities, 85 versions ## Questions ### How many vulnerabilities does Zammad have? Our catalogue lists 80 published vulnerabilities across 1 product and 85 versions from Zammad. The most recent Zammad flaw added to the known-exploited list is CVE-2026-102489, on 2 October 2026. ### Which Zammad vulnerabilities are being exploited? 2 Zammad vulnerabilities are on the list of flaws known to be exploited. The most recently added are CVE-2026-102489 and CVE-2026-102490. The full list is on this page. ### Which Zammad product has the most vulnerabilities? Zammad, with 80 published vulnerabilities. Its own page lists the ones known to be exploited. ### How do I get alerts for new Zammad vulnerabilities? Create a Precursor Intelligence account and track the Zammad products you run. We match them against every published flaw, give each one a risk score from 0 to 100 and tell you as soon as we spot one that affects you, by email, in the app or by webhook. ## Running Zammad? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact