CVE-2018-19960

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.

Published: 2018-12-07 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-19960 is rated Low Risk (31.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.04%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-19960

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.08% 0.04% -0.04%
2 2025-03-29 0.04% 0.08% +0.04%
3 2023-03-07 — 0.04% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-19960

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.0 3.0 HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.0 5.9 [email protected]
4.4 2.0 MEDIUM
AV:L/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.4 6.4 [email protected]

Weakness enumeration for CVE-2018-19960

GitHub Security Advisory for CVE-2018-19960

GHSA-pwjq-6wrh-5w8q · Severity: high · Ecosystem: pip — Withdrawn Advisory: OnionShare Predictable Pathname

OS Trackers for CVE-2018-19960

vendor priority summary link
debian unimportant CVE-2018-19960 unimportant priority: Debian including 1 source packages (onionshare), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2018-19960
ubuntu medium CVE-2018-19960 medium priority: Ubuntu including 1 source packages (onionshare), 18 status rows across 18 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): ignored 7, not-affected 6, released 3, DNE 2. https://ubuntu.com/security/CVE-2018-19960

Affected software / configurations for CVE-2018-19960

Vendor Product Version Raw CPE
onionshare onionshare <= 1.3.1 cpe:2.3:a:onionshare:onionshare:*:*:*:*:*:*:*:*

References for CVE-2018-19960

URL Tags
https://bugs.debian.org/915859 Issue Tracking Third Party Advisory
cvelogic Threat Intelligence