What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-09 · updated 2026-10-26
• Weakness: CWE-93

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.

Affected products

• AOSC-Dev oma: before 1.25.1

References

• https://github.com/AOSC-Dev/oma/commit/b361c0f219bbf91a684610c76210f71f093dbc18
• https://github.com/AOSC-Dev/oma/pull/733
• https://github.com/AOSC-Dev/oma/releases/tag/v1.25.2
• https://github.com/AOSC-Dev/oma/security/advisories/GHSA-86jc-7r6q-cr3f

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