CVE-2026-28684
python-dotenv reads key-value pairs from a .env file and can set them as environment variables.
Published Apr 20, 2026 · corrected/updated Jun 17, 2026 · saurabh-kumar python-dotenv · evidence confidence medium
python-dotenv reads key-value pairs from a .env file and can set them as environment variables. Prior to version 1.2.2, and in python-dotenv follow symbolic links when rewriting files, allowing a local attacker to overwrite arbitrary files via a crafted symlink when a cross-device rename fallback is triggered. Users should upgrade to v.1.2.2 or, as a workaround, apply the patch manually.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-28684 is a medium public vulnerability record for saurabh-kumar python-dotenv. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether saurabh-kumar python-dotenv is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: saurabh-kumar/python-dotenv. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 6.6. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-59, CWE-61. Sources contributing to this record: cve_org, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Apr 20, 2026 · NIST NVD
Detected
python-dotenv reads key-value pairs from a .env file and can set them as environment variables. Prior to version 1.2.2, and in python-dotenv follow symbolic links when rewriting files, allowing a local attacker to overwrite arbitrary files via a crafted symlink when a cross-device rename fallback is triggered. Users should upgrade to v.1.2.2 or, as a workaround, apply the patch manually.
Jun 17, 2026 · NIST NVD
Updated
python-dotenv reads key-value pairs from a .env file and can set them as environment variables. Prior to version 1.2.2, and in python-dotenv follow symbolic links when rewriting files, allowing a local attacker to overwrite arbitrary files via a crafted symlink when a cross-device rename fallback is triggered. Users should upgrade to v.1.2.2 or, as a workaround, apply the patch manually.
Affected
- cpe saurabh-kumar/python-dotenvversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-28684
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-28684
python-dotenv reads key-value pairs from a .env file and can set them as environment variables. Prior to version 1.2.2, and in python-dotenv follow symbolic links when rewriting files, allowing a local attacker to overwrite arbitrary files via a c
nvd.nist.gov