---
cve: "CVE-2026-33548"
severity: "HIGH"
cvss: 8.6
epss: "20%"
vendor: "mantisbt"
kev: false
exploited: false
published: "2026-03-23 20:16:27"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T05:48:47+02:00"
---

# CVE-2026-33548

> 8.6 HIGH · 🧪 PoC

## Beschreibung

Mantis Bug Tracker (MantisBT) is an open source issue tracker. In version 2.28.0, improper escaping of tag names retrieved from History in Timeline (my_view_page.php) allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript, when displaying a tag that has been renamed or deleted. Version 2.28.1 contains a patch. Workarounds include editing offending History entries (using SQL) and wrapping `$this->tag_name` in a string_html_specialchars() call in IssueTagTimelineEvent::html().

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |

## Patch verfügbar (OSV)

- f32787c14d4518476fe7f05f992dbfe6eaccd815 (Commit)

## Referenzen

- <https://github.com/mantisbt/mantisbt/security/advisories/GHSA-73vx-49mv-v8w5>
- <https://github.com/mantisbt/mantisbt/commit/f32787c14d4518476fe7f05f992dbfe6eaccd815>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-33548) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_