Pillow
CVE-2021-28678
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A08:2025 - Software or Data Integrity Failures
ASVS 5.0
V15 - Secure Coding and Architecture Data authenticity verification
|
| Impact | CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required. |
| Exploit ScenarioDerived | Successful exploitation could compromise the medium-severity affected system. |
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Alert meAnalysisAI
An issue was discovered in Pillow before 8.2.0. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in pypi
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified under CWE-345. An issue was discovered in Pillow before 8.2.0. For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run a large number of times on empty data. Affected products include: Python Pillow, Fedoraproject Fedora. Version information: before 8.2.0..
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
An issue was discovered in Pillow before 8.2.0. For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run a large number of times on empty data.
Blast Radius
ecosystem impact- 21 pypi packages depend on pillow (15 direct, 6 indirect)
Ecosystem-wide dependent count for version 5.1.0.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)NVD
libImaging/TgaRleDecode.c in Pillow 9.1.0 has a heap buffer overflow in the processing of invalid TGA image files. Rated
Denial of service in Python Pillow (versions 8.2.0 through 12.2.0) allows remote attackers to exhaust memory during JPEG
Out-of-bounds memory disclosure in Python Pillow before 12.3.0 lets an attacker who supplies a crafted McIdas AREA image
Heap out-of-bounds write in Python Pillow prior to 12.3.0 lets an attacker who controls the rank-filter size parameter c
Denial-of-service and controlled heap corruption in Python's Pillow imaging library (all versions prior to 12.3.0) occur
Denial of service in Python Pillow 12.0.0 through 12.2.0 lets a remote attacker hang an application by supplying a craft
Denial of service (and potential memory corruption) in Python Pillow before 12.3.0 arises when public image coordinate A
Uncontrolled memory allocation in Python Pillow before 12.3.0 lets a crafted BDF font file exhaust available memory and
Uncontrolled memory consumption in Python Pillow (PIL) versions 5.1.0 through 12.2.x allows a remote attacker to cause d
Denial-of-service via memory exhaustion in Python Pillow before 12.3.0 allows a crafted GD-format (.gd) image to trigger
Uncontrolled memory allocation in Python Pillow before 12.3.0 allows a maliciously crafted font file to trigger excessiv
Uncontrolled memory allocation in the Python Pillow imaging library (all versions prior to 12.3.0) allows a crafted PCF
Exploit-DB