CVE-2019-3902 | BDVDB-2026-115441 Detail

The Mercurial Projectmercurial

Description#

A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository.

Impact#

Per CVSS v3.0: confidentiality impact none, integrity impact high, availability impact none. Attack vector: local.

Weaknesses#

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References#

Exploit#

No public exploit known

History#

Version 12019-04-22Record published in the CVE List.
Version 22024-08-04Most recent update recorded in the CVE List.

Published

Published: 2019-04-22
Last modified: 2024-08-04

Vendor information

Vendor: The Mercurial Project
Product: mercurial

All The Mercurial Project vulnerabilities

Score

5.1 Medium

EPSS

1.3%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 72.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Path Traversal

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
before 4.9
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

Not available

CVSS v3.0

5.1 Medium

CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Metric breakdown
Attack Vector	Local
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	High
Availability	None

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).