CVE-2026-39958 MEDIUM

CVE-2026-39958: oma-topic: name Field in Topic Manifests (topic.json) May Allow CRLF Injection

Vendor Aosc-Dev
Product oma
Weakness CWE-93 · CRLF injection
Published April 9, 2026
Last update April 13, 2026

CVSS base score

5.2/10
Attack vector Network
Attack complexity High
Privileges required High
User interaction
Confidentiality
Integrity

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 9, 2026 CVE published
April 13, 2026 Record updated