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Fencer Vulns
high 7.0

CVE-2018-19960 json

Withdrawn Advisory: OnionShare Predictable Pathname

published 2018-12-07 7 y ago modified 2026-09-10 1 mo ago also GHSA-pwjq-6wrh-5w8q , EUVD-2022-4839

cvss
7.0
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

The debug_mode function in web/web.py in OnionShare through 1.3.1, when --debug is enabled, uses the /tmp/onionshare_server.log pathname for logging, which might allow local users to overwrite files or obtain sensitive information by using this pathname.

Patch / fix

  • onionshare Debian 14, Debian 13, Debian 12 1.3.2-1

debian advisories DEBIAN-CVE-2018-19960

  • onionshare Ubuntu Pro 16.04 LTS 0.8.1-1ubuntu0.1~esm1
  • onionshare Ubuntu Pro 18.04 LTS 0.9.2-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2018-19960

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python-onionshare openSUSE Tumbleweed 2.3.3-2.5
  • python3-onionshare openSUSE Tumbleweed 2.6-4.1

opensuse advisories openSUSE-SU-2024:11246-1openSUSE-SU-2024:13635-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-19960 updated cvss 7.1

onionshare: debug_mode function uses /tmp/onionshare_server.log pathname for logging

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.0 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.