Skip to content

[GHSA-5xmw-vc9v-4wf2] Pillow has a heap buffer overflow with nested list coordinates #10210

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
ranjiGT wants to merge 1 commit into
base: ranjiGT/advisory-improvement-10210
Choose a base branch
from
Open

[GHSA-5xmw-vc9v-4wf2] Pillow has a heap buffer overflow with nested list coordinates #10210

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 5 additions & 5 deletions advisories/github-reviewed/2026/05/GHSA-5xmw-vc9v-4wf2/GHSA-5xmw-vc9v-4wf2.json
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,18 +1,14 @@
{
"schema_version": "1.4.0",
"id": "GHSA-5xmw-vc9v-4wf2",
"modified": "2026-05-13T13:39:39Z",
"modified": "2026-05-13T13:39:40Z",
"published": "2026-05-04T20:18:27Z",
"aliases": [
"CVE-2026-42309"
],
"summary": "Pillow has a heap buffer overflow with nested list coordinates",
"details": "Passing nested lists as coordinates to APIs that accept coordinates such as `ImagePath.Path`, `ImageDraw.ImageDraw.polygon` and `ImageDraw.ImageDraw.line` could cause a heap buffer overflow, as nested lists were recursively unpacked beyond the allocated buffer. Coordinate lists are now validated to contain exactly two numeric coordinates. This was introduced in Pillow 11.2.1.",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
Expand Down Expand Up @@ -48,6 +44,10 @@
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42309"
},
{
"type": "WEB",
"url": "https://github.com/python-pillow/Pillow/commit/cf6de8ca9b23e714aa5310e1c791eda66fc0b670"
},
{
"type": "PACKAGE",
"url": "https://github.com/python-pillow/Pillow"
Expand Down
Loading