---
cve: "CVE-2026-86738"
severity: "CRITICAL"
cvss: 9.3
epss: "28%"
vendor: "grokability"
kev: false
exploited: false
published: "2026-09-08 16:18:36"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T08:41:05+02:00"
---

# CVE-2026-86738

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encoding on greater-than and double-quote characters. Superusers can plant malicious CSS payloads using @import and url() references to exfiltrate CSRF tokens from other superusers via attribute-selector rules, enabling account takeover.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Hoch | good |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 1d05a7ce11e6bf9448c067ac3ffbe5e63882888e (Commit)
- d26d71688359707f3b257fc04fe6c3e5a17405f9 (Commit)

## Referenzen

- <https://github.com/grokability/snipe-it/security/advisories/GHSA-pvcw-mp8q-mj39>
- <https://github.com/grokability/snipe-it/commit/d26d71688359707f3b257fc04fe6c3e5a17405f9>
- <https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-css-injection-via-custom-css>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-86738) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_