CVE-2026-39958

medium

Description

oma is a package manager for AOSC OS. Prior to 1.25.2, oma-topics is responsible for fetching metadata for testing repositories (topics) named "Topic Manifests" ({mirror}/debs/manifest/topics.json) from remote repository servers, registering them as APT source entries. However, the name field in said metadata were not checked for transliteration. In this case, a malicious party may supply a malformed Topic Manifest, which may cause malicious APT source entries to be added to /etc/apt/sources.list.d/atm.list as oma-topics finishes fetching and registering metadata. This vulnerability is fixed in 1.25.2.

References

https://github.com/AOSC-Dev/oma/security/advisories/GHSA-86jc-7r6q-cr3f

https://github.com/AOSC-Dev/oma/releases/tag/v1.25.2

https://github.com/AOSC-Dev/oma/pull/733

https://github.com/AOSC-Dev/oma/commit/b361c0f219bbf91a684610c76210f71f093dbc18

Details

Source: Mitre, NVD

Published: 2026-04-09

Updated: 2026-04-09

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 5.2

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

Severity: Medium

EPSS

EPSS: 0.00043