---
cve: "CVE-2026-27809"
severity: "MEDIUM"
cvss: 6.8
epss: "0.4%"
vendor: "psd-tools"
kev: false
exploited: false
published: "2026-02-26 00:16:26"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T11:16:22+02:00"
---

# CVE-2026-27809

> 6.8 MEDIUM · 🧪 PoC

## Beschreibung

psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to version 1.12.2, when a PSD file contains malformed RLE-compressed image data (e.g. a literal run that extends past the expected row size), decode_rle() raises ValueError which propagated all the way to the user, crashing psd.composite() and psd-tools export. decompress() already had a fallback that replaces failed channels with black pixels when result is None, but it never triggered because the ValueError from decode_rle() was not caught. The fix in version 1.12.2 wraps the decode_rle() call in a try/except so the existing fallback handles the error gracefully.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- c42b1c0bbc37c8d06b019724b8eeae977b44a7e2 (Commit)
- 6c0a78f195b5942757886a1863793fd5946c1fb1 (Commit)

## Referenzen

- <https://github.com/psd-tools/psd-tools/security/advisories/GHSA-24p2-j2jr-386w>
- <https://github.com/psd-tools/psd-tools/commit/6c0a78f195b5942757886a1863793fd5946c1fb1>
- <https://github.com/psd-tools/psd-tools/releases/tag/v1.12.2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-27809) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_