Insecure permissions in Librera PDF Reader let attackers write files
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
foobnix Librera PDF Reader versionCode 7222 has insecure permissions. An unauthenticated remote attacker can write and truncate files in a shared storage space outside the app sandbox. The weakness is classified as CWE-22.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Description from the CNA
Insecure permissions in foobnix Librera PDF Reader versionCode 7222 allows unauthorized attackers to arbitrarily write and truncate files in a shared storage space outside of the sandbox.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Librera PDF Reader.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Timeline
- 2026-10-29 Threatist record created from CVE-2026-107053
- 2026-10-29 Alias added: GHSA-m2r9-39v4-c9p7
- 2026-11-03 CVSS score added · CISA ADP
- 2026-11-03 Weakness changed · CISA ADP
- 2026-11-03 CISA SSVC decision points changed
- 2026-11-03 Priority changed: LOW → HIGH
References
Sources
- CVE-2026-107053 · CVE Program
- CVE-2026-107053 · NVD
- FIRST EPSS
- GHSA-m2r9-39v4-c9p7 · GitHub Advisory Database · CC BY 4.0
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