Dashboard / CVE-2026-112898

CVE-2026-112898

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 74/100
Published: 2026-10-19 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: None
VC: Low
VI: None
VA: None

Description

Pillow is a Python imaging library. From 9.1.0 until 13.0.0, Pillow can disclose uninitialized stack memory when Image.quantize() uses an empty palette. ImagingPaletteCacheUpdate() leaves a local cache array uninitialized when the palette has zero entries, and the conversion path emits those bytes as output pixel indices. An attacker who controls the palette image can obtain stack contents from a returned PNG or GIF. This can disclose addresses and stack-canary data without an out-of-bounds access, memory corruption, or process crash. This issue is fixed in version 13.0.0.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
python pillow 9.1.0 – 13.0.0
python pillow 9.1.0 – 13.0.0
python-pillow Pillow >= 9.1.0, < 13.0.0
python-pillow Pillow >= 9.1.0, < 13.0.0

References & Advisories (3)

Bug Bounty Relevance

74 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.34%
Raw Score 0.003390
Percentile 27.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00339
2026-10-28
0.00339

Intelligence Sources

mitre ref →
nvd ref →

External Links