CVE-2026-39860

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.19% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 8.8% of scored records. A rank, not a probability.

NVD base score

8.4 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

NVD analysis status

Analyzed. NVD last modified this record on 2026-07-24.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-04-08 20:58Z6 MO AGO

Last updated

2026-04-09 13:42Z6 MO AGO

Reserved

2026-04-07

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Critical (CVSS 9.0)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Weaknesses

• CWE-61UNIX Symbolic Link (Symlink) FollowingCompound

Data version

5.2

Document digest

aac6e3ad237cc6498a9db905ac8e1568cf7d45364d5942c8a3c8ecaddd45e691

• github.comhttps://github.com/NixOS/nix/security/advisories/GHSA-g3g9-5vj6-r3gjx_refsource_CONFIRM
• github.comhttps://github.com/NixOS/nix/pull/10178x_refsource_MISC
• github.comhttps://github.com/NixOS/nix/commit/244f3eee0bbc7f11e9b383a15ed7368e2c4becc9x_refsource_MISC
• github.comhttps://github.com/NixOS/nix/commit/4bc5a3510fa3735798f9ed3a2a30a3ea7b32343ax_refsource_MISC
• github.comhttps://github.com/NixOS/nix/commit/7794354a982449927ee7401cdeb573ddd16c4688x_refsource_MISC
• github.comhttps://github.com/NixOS/nix/commit/a3163b9eabb952b4aa96e376dea95ebcca97b31ax_refsource_MISC