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Description
Versions of st prior to 0.2.5 are affected by a directory traversal vulnerability. Vulnerable versions fail to properly handle URL encoded dots, which caused %2e to be interpreted as . by the filesystem, resulting the potential for an attacker to read sensitive files on the server.
Recommendation
Update to version 0.2.5 or later.
Basic information
Type
reviewed
Severity
high Advisory on GitHub
Open advisory ↗ Repository advisory
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Source code
Browse source ↗ Published (advisory)
2020-08-31 22:58:04 UTC
Updated
2023-01-09 05:03:42 UTC
GitHub reviewed
2020-08-31 18:08:44 UTC
EPSS Score
Score
Percentile
78.17%
99.00%
CVSS Scores
Base score
Version
Severity
Vector
7.5
3.0
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CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
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:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
CWEs
CWE id
Name
CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
npm
st < 0.2.5
0.2.5
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cvelogic
Threat Intelligence