CVE-2021-28675 — Unchecked Return Value in Pillow

CWE-252 — Unchecked Return ValueCWE-233 — Improper Handling of ParametersCWE-20 — Improper Input Validation10 documents7 sources
Severity
5.5MEDIUMNVD
OSV9.1
EPSS
0.1%
top 69.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Python PillowFedoraproject Fedora
Timeline
PublishedJun 2
Latest updateMar 31

Description

An issue was discovered in Pillow before 8.2.0. PSDImagePlugin.PsdImageFile lacked a sanity check on the number of input layers relative to the size of the data block. This could lead to a DoS on Image.open prior to Image.load.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDpython/pillow< 8.2.0
▶PyPIpython/pillow< 8.2.0
▶Debianpython/pillow< 8.1.2+dfsg-0.2+3
▶Ubuntupython/pillow< 2.3.0-1ubuntu3.4+esm5+2

Also affects: Fedora 33

🔴Vulnerability Details

5
OSV
pillow vulnerabilities↗2026-03-31
▶
GHSA
Pillow denial of service↗2021-06-08
▶
OSV
Pillow denial of service↗2021-06-08
▶
OSV
CVE-2021-28675: An issue was discovered in Pillow before 8↗2021-06-02
▶
CVEList
CVE-2021-28675: An issue was discovered in Pillow before 8↗2021-06-02
▶

📋Vendor Advisories

4
Ubuntu
Pillow vulnerabilities↗2026-03-31
▶
Ubuntu
Pillow vulnerabilities↗2021-05-19
▶
Red Hat
python-pillow: Excessive memory allocation in PSD image reader↗2021-04-01
▶
Debian
CVE-2021-28675: pillow - An issue was discovered in Pillow before 8.2.0. PSDImagePlugin.PsdImageFile lack...↗2021
▶
CVE-2021-28675 — Unchecked Return Value in Python | cvebase