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» GHSA-qq74-vgcf-54c3
Description
ShowDoc is vulnerable to stored cross-site scripting via viva cshtm file upload in in versions 2.10.3 and prior. A patch is available and anticipated to be part of version 2.10.4.
Basic information
Type
reviewed
Severity
medium Advisory on GitHub
Open advisory ↗ Repository advisory
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Source code
Browse source ↗ Published (advisory)
2022-03-15 00:01:00 UTC
Updated
2023-01-27 05:00:41 UTC
GitHub reviewed
2022-03-23 14:16:17 UTC
NVD published
2022-03-14 14:15:00 UTC
EPSS Score
Score
Percentile
0.32%
54.73%
CVSS Scores
Base score
Version
Severity
Vector
5.4
3.1
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CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
CWEs
CWE id
Name
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
composer
showdoc/showdoc <= 2.10.3
2.10.4
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cvelogic
Threat Intelligence