Pillow

A vulnerability, CVE-2026-54060, in the Pillow library's `FontFile.compile()` method allows attackers to craft malicious BDF or PCF font files that bypass standard decompression bomb checks, causing an unchecked, massive memory allocation when processed, which can lead to a Denial of Service (DoS) via an Out-Of-Memory (OOM) crash in vulnerable applications.

A vulnerability (CVE-2026-55379) in Pillow's BdfFontFile component allows attackers to craft a malicious BDF font file with oversized BBX dimensions and an empty BITMAP section, bypassing documented decompression bomb protection and causing the Image.new() function to silently allocate large amounts of memory in the C-heap, leading to resource exhaustion and denial-of-service for applications processing untrusted BDF fonts.

The Pillow library contains an out-of-bounds read vulnerability in its McIdas AREA plugin when processing specially crafted image files opened from a filename, allowing an attacker to manipulate header words to define a 'stride' value smaller than the actual row width, leading to information disclosure through adjacent process memory leakage or denial of service due to a process crash (SIGBUS).

A denial-of-service vulnerability, CVE-2026-59203, exists in the Python imaging library Pillow, affecting versions 12.0.0 through 12.2.0, where a specially crafted EPS file with a negative byte count in the `%%BeginBinary` directive can cause an infinite loop and resource exhaustion when processed by the `Image.open()` function, leading to application unresponsiveness.

Pillow versions 10.3.0 through 12.1.1 are vulnerable to an out-of-bounds write in PSD image decoding/encoding due to an integer overflow when computing tile extent sums, potentially leading to arbitrary code execution.

Pillow versions 10.3.0 through 12.1.x are vulnerable to a decompression bomb attack via maliciously crafted FITS images, leading to excessive memory consumption and denial of service, resolved in version 12.2.0.