CVE•Published 2026-10-19•Modified 2026-10-28•0 articles on news•3 live references•NVD data

CVE-2026-112399Python · Pillow

Vulnerability data via NVD (ingested)

CVSS v3.1

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 68% of all CVEs

Weaknesses (CWE)

CWE-789Memory Allocation with Excessive Size Value

Description

Pillow is a Python imaging library. From 8.1.0 until 13.0.0, Pillow can allocate an APNG disposal background at the full canvas size before applying the decompression-bomb check. A crafted APNG with a small first frame, a very large declared canvas, and background disposal or first-frame OP_PREVIOUS reaches PngImageFile._seek while Image.open() positions frame zero. The full-canvas allocation occurs inside Image.open() without requiring pixel loading or frame iteration. This can exhaust memory and deny service. This issue is fixed in version 13.0.0.

Timeline

Published 2026-10-19

Modified 2026-10-28

External references

NVD MITRE VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-112399

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Python Pillow"

All exposed Python Pillow instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Pillow"

HTTP body or banner mentions "Pillow" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-112399