python-dotenv reads key-value pairs from a .env file and can set them as environment variables. Prior to version 1.2.2, `set_key()` and `unset_key()` in python-dotenv follow symbolic links when rewriting `.env` 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.

The remote openSUSE 16 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2026:20952-1 advisory.

    This update for python-python-dotenv fixes the following issue:

    - CVE-2026-28684: Prior to version 1.2.2, `set_key()` and `unset_key()` in python-dotenv follow symbolic     links when       rewriting `.env` files, allowing a local attacker to overwrite arbitrary files via a crafted symlink     (bsc#1262423).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-79e64d2daa advisory.

    Update to 1.2.2, security fix for CVE-2026-28684.


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-20312e36a8 advisory.

    Update to 1.2.2, security fix for CVE-2026-28684.


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - python-dotenv reads key-value pairs from a .env file and can set them as environment variables. Prior to     version 1.2.2, `set_key()` and `unset_key()` in python-dotenv follow symbolic links when rewriting `.env`     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. (CVE-2026-28684)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
321388	openSUSE 16 Security Update : python-python-dotenv (openSUSE-SU-2026:20952-1)	Nessus	SuSE Local Security Checks	medium
315987	Fedora 44 : python-dotenv (2026-79e64d2daa)	Nessus	Fedora Local Security Checks	medium
315972	Fedora 43 : python-dotenv (2026-20312e36a8)	Nessus	Fedora Local Security Checks	medium
307649	Linux Distros Unpatched Vulnerability : CVE-2026-28684	Nessus	Misc.	medium

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CVE-2026-28684

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