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BELL-CVE-2025-66034

Affected: Alpaquita:23: py3-fonttools, Alpaquita:25: py3-fonttools, Alpaquita:stream: py3-fonttools

BREW-fonttools-CVE-2025-66034 — fontTools is Vulnerable to Arbitrary File Write and XML injection in fontTools.varLib

Affected: Homebrew: fonttools

fontTools is a library for manipulating fonts, written in Python. In versions from 4.33.0 to before 4.60.2, the fonttools varLib (or python3 -m fontTools.varLib) script has an arbitrary file write vulnerability that leads to remote code execution when a malicious .designspace file is processed. The vulnerability affects the main() code path of fontTools.varLib, used by the fonttools varLib CLI and any code that invokes fontTools.varLib.main(). This issue has been patched in version 4.60.2.

certfr-2026-avi-0556 — De multiples vulnérabilités ont été découvertes dans les produits VMware. Elles permettent à un attaquant de provoquer…

certfr-2026-avi-0556

EUVD-2026-262080

fkie_cve-2025-66034

GHSA-768j-98cg-p3fv — fontTools is Vulnerable to Arbitrary File Write and XML injection in fontTools.varLib

Affected: PyPI: fonttools

## Summary

The `fonttools varLib` (or `python3 -m fontTools.varLib`) script has an arbitrary file write vulnerability that leads to remote code execution when a malicious .designspace file is processed. The vulnerability affects the `main()` code path of `fontTools.varLib`, used by the fonttools varLib CLI and any code that invokes `fontTools.varLib.main()`.

The vulnerability exists due to unsanitised filename handling combined with content injection. Attackers can write files to arbitrary filesystem locations via path traversal sequences, and inject malicious code (like PHP) into the output files through XML injection in labelname elements. When these files are placed in web-accessible locations and executed, this achieves remote code execution without requiring any elevated privileges. Once RCE is obtained, attackers can further escalate privileges to compromise system files (like overwriting `/etc/passwd`).

Overall this allows attackers to: - Write font files to arbitrary locations on the filesystem - Overwrite configuration files - Corrupt application files and dependencies - Obtain remote code execution

The attacker controls the file location, extension and contents which could lead to remote code execution as well as enabling a denial of service through file corruption means.

## Affected Lines

`fontTools/varLib/__init__.py` ```python filename = vf.filename # Unsanitised filename output_path = os.path.join(output_dir, filename) # Path traversal vf.save(output_path…

openSUSE-SU-2026:20119-1 — Security update for python-FontTools

Security update for python-FontTools

PYSEC-2026-1389 — fontTools is Vulnerable to Arbitrary File Write and XML injection in fontTools.varLib

Affected: PyPI: fonttools

## Summary

The attacker controls the file location, extension and contents which could lead to remote code execution as well as enabling a denial of service through file corruption means.

## Affected Lines

`fontTools/varLib/__init__.py` ```python filename = vf.filename # Unsanitised filename output_path = os.path.join(output_dir, filename) # Path traversal vf.save(output_path…

RHSA-2026:2106 — Red Hat Security Advisory: RHOAI 2.25.2 - Red Hat OpenShift AI

llama-stack-k8s-operator: Llama Stack service exposed across namespaces due to missing NetworkPolicy node-forge: node-forge: Interpretation conflict vulnerability allows bypassing cryptographic verifications runc: opencontainers/selinux: container escape and denial of service due to arbitrary write gadgets and procfs write redirects fonttools: fontTools: Arbitrary file write leading to remote code execution via malicious .designspace file urllib3: urllib3: Unbounded decompression chain leads to resource exhaustion urllib3: urllib3 Streaming API improperly handles highly compressed data github.com/sigstore/fulcio: Fulcio: Denial of Service via crafted OpenID Connect (OIDC) token github.com/argoproj/argo-workflows: argoproj/argo-workflows is vulnerable to RCE via ZipSlip and symbolic links tornado: Tornado Quadratic DoS via Repeated Header Coalescing tornado: Tornado Quadratic DoS via Crafted Multipart Parameters github.com/expr-lang/expr: Expr: Denial of Service via uncontrolled recursion in expression evaluation github.com/kedacore/keda: KEDA: Arbitrary file read vulnerability in Vault authentication aiohttp: AIOHTTP's HTTP Parser auto_decompress feature is vulnerable to zip bomb urllib3: urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API) wheel: wheel: Privilege Escalation or Arbitrary Code Execution via malicious wheel file unpacking

SUSE-SU-2026:20184-1 — Security update for python-FontTools

Security update for python-FontTools

UBUNTU-CVE-2025-66034

Affected: Ubuntu:Pro:24.04:LTS: fonttools, Ubuntu:25.10: fonttools, Ubuntu:26.04:LTS: fonttools

WID-SEC-W-2026-2189 — Dell PowerProtect Data Domain: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Dell PowerProtect Data Domain ausnutzen, um seine Privilegien zu erhöhen um beliebigen Programmcode auszuführen, um Sicherheitsvorkehrungen zu umgehen, um einen Denial of Service Angriff durchzuführen, um einen Cross-Site Scripting Angriff durchzuführen, um Informationen offenzulegen, und um Dateien zu manipulieren.