Vulnerabilities in pkg:pypi/psd-tools
PACKAGECVE-2020-10571 is a CRITICAL (CVSS 9.8) potential buffer overflow vulnerability (CWE-754: Improper Check for Unusual or Exceptional Conditions) affecting Psd tools libraries in the PyPI ecosystem. The issue involves potential buffer overflow in psd-tools. Remediation is available by upgrading affected packages to version 1.9.4.
pkg:pypi/psd-tools
Vulnerability advisories affecting package pkg:pypi/psd-tools. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-22jr-vc7j-g762 | CVE-2020-10571 | CRITICAL | Potential buffer overflow in psd-tools |
| GHSA-8q6g-vjhf-jp8m | CVE-2026-59991 | HIGH | psd-tools composite/numpy has uncontrolled memory allocation via crafted PSD geometry |
| GHSA-2rmg-vrx8-9j2f | CVE-2026-49836 | MODERATE | psd-tools vulnerable to arbitrary file write via smart-object filename |
| GHSA-24p2-j2jr-386w | CVE-2026-27809 | MODERATE | psd-tools: Compression module has unguarded zlib decompression, missing dimension validation, and hardening gaps |
CVE-2020-10571 at a Glance
Security Impact
CVSS: 9.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2020-10571
To remediate this vulnerability, upgrade all affected Psd tools dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
pip install psd-tools>=1.9.4Run the following command in your project directory to verify that all resolved dependencies use the patched release:
pip show psd-toolsHow to Check if You Are Affected
To determine whether your Python environment is affected by CVE-2020-10571, inspect your installed packages using pip:
pip show psd-toolsAnalyze the terminal output to locate any version of Psd tools in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.9.4), your application is affected.
Note: The pip show psd-tools command checks currently installed packages in your active Python environment.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-754: Improper Check for Unusual or Exceptional Conditions, where the product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product. In Psd tools, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2020-10571 Affected Psd tools Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
psd-tools
|
PyPI |
≥ 1.8.37
< 1.9.4
|
1.9.4
|
References
Frequently Asked Questions
What is CVE-2020-10571?
Which Psd tools versions are affected?
What version fixes CVE-2020-10571?
Is psd-tools affected?
What is the CVSS score of CVE-2020-10571?
What CWE is associated with CVE-2020-10571?
How can I check PyPI dependencies for CVE-2020-10571?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-22jr-vc7j-g762",
"modified" : "2026-09-24T14:55:09Z",
"published" : "2020-03-16T22:46:19Z",
"aliases" : [ "CVE-2020-10571" ],
"summary" : "Potential buffer overflow in psd-tools",
"details" : "### Impact\nAn issue was discovered in psd-tools before 1.9.4. The Cython implementation of RLE decoding did not check for malformed PSD input data during decoding to the PIL.Image or NumPy format, leading to a Buffer Overflow.\n\n### Patches\nUsers of psd-tools version v1.8.37 to v1.9.3 should upgrade to v1.9.4.\n\n### Workarounds\nWithout Cython present on installation, buffer overflow does not occur but IndexError will be thrown. However, already installed psd-tools with Cython extention should be upgraded.\n\n### References\nhttps://github.com/psd-tools/psd-tools/pull/198\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [psd-tools](https://github.com/psd-tools/psd-tools/issues)",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}, {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "PyPI",
"name" : "psd-tools"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.8.37"
}, {
"fixed" : "1.9.4"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 1.9.3"
}
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/psd-tools/psd-tools/security/advisories/GHSA-22jr-vc7j-g762"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-10571"
}, {
"type" : "WEB",
"url" : "https://github.com/psd-tools/psd-tools/pull/198"
}, {
"type" : "WEB",
"url" : "https://github.com/psd-tools/psd-tools/commit/fd51f8b4a52bc9c1c06d1035dfdf2cd920e87074"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/psd-tools/psd-tools"
}, {
"type" : "WEB",
"url" : "https://github.com/psd-tools/psd-tools/releases/tag/v1.9.4"
}, {
"type" : "WEB",
"url" : "https://github.com/pypa/advisory-database/tree/main/vulns/psd-tools/PYSEC-2020-91.yaml"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-754" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2020-03-16T20:55:37Z",
"nvd_published_at" : null
}
}