PT-2026-31657 · Apt+2 · Apt+2

Published 2026-04-09 · Updated 2026-04-09 · CVE-2026-39958

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions oma versions prior to 1.25.2

Description oma, a package manager for AOSC OS, has an issue where the oma-topics component improperly handles metadata from remote repository servers. Specifically, it fetches metadata for testing repositories named "Topic Manifests" from endpoints like {mirror}/debs/manifest/topics.json and registers them as APT source entries. A lack of input validation on the 'name' field within this metadata allows a malicious party to inject malformed Topic Manifests, potentially leading to the addition of malicious APT source entries to /etc/apt/sources.list.d/atm.list.

Recommendations Update to version 1.25.2 or later.

Fix

Weakness Enumeration

CWE-93

Related Identifiers

CVE-2026-39958

Affected Products

Aosc Os

Apt

Oma

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-39958 · Security Note
• https://github.com/AOSC-Dev/oma/security/advisories/GHSA-86jc-7r6q-cr3f · Note
• https://github.com/AOSC-Dev/oma/commit/b361c0f219bbf91a684610c76210f71f093dbc18 · Note
• https://github.com/AOSC-Dev/oma/releases/tag/v1.25.2 · Note
• https://github.com/AOSC-Dev/oma/pull/733 · Note
• https://twitter.com/CVEnew/status/2042302795710414961 · Twitter Post