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Vulnerabilities

Vulnerability · CVE-2026-28684

python-dotenv reads key-value pairs from a .env file and can set them as environment variables.

Published Apr 20, 2026 · catalog updated Jun 17, 2026 · python-dotenv reads key-value pairs

Check if you run it

No confirmed exploitation is on record for CVE-2026-28684. EPSS is 0.19%. Act only if a listed version of python-dotenv reads key-value pairs is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (python-dotenv reads key-value pairs).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.19%
Remediation
Advisory link
Affected products
cpe saurabh-kumar/python-dotenv

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe saurabh-kumar/python-dotenvversion unspecified

How to fix CVE-2026-28684

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-28684. EPSS is 0.19%. Act only if a listed version of python-dotenv reads key-value pairs is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-59: Link Following; CWE-61. EPSS 0.19%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. 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.

  2. 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.

Sources

  • CVE.orgVulnerability recordCVE-2026-28684

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-28684

    30-day exploitation probability 0.2%

    first.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

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.