CVE-2015-4082 is a medium-severity (CVSS 6.5) CWE-264 vulnerability in attic. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for attic — see the affected versions and patch details below.
attic has improper verification of unencrypted backups
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
atticReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
attic before 0.15 does not confirm unencrypted backups with the user, which allows remote attackers with read and write privileges for the encrypted repository to obtain potentially sensitive information by changing the manifest type byte of the repository to "unencrypted / without key file".
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | attic | all versions | 0.15pip install --upgrade 'attic==0.15' |
Affected Products
atticattic_projectResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for attic, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update attic to 0.15 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2015-4082 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is CVE-2015-4082 in your dependencies?
Find it across PyPI, including transitive dependencies.