CVE-2020-5283

XSS vulnerability in CVS show_subdir_lastmod support

LOW
3.5
CVSS Score
Published: April 3, 2020 at 12:10 AM UTC
Updated: June 17, 2026 at 03:21 AM UTC
1 product affected across 1 vendorViewvc

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Severity
LOW3.5
Exploit prediction
EPSS 1%

Description

ViewVC before versions 1.1.28 and 1.2.1 has a XSS vulnerability in CVS show_subdir_lastmod support. The impact of this vulnerability is mitigated by the need for an attacker to have commit privileges to a CVS repository exposed by an otherwise trusted ViewVC instance that also has the `show_subdir_lastmod` feature enabled. The attack vector involves files with unsafe names (names that, when embedded into an HTML stream, would cause the browser to run unwanted code), which themselves can be challenging to create. This vulnerability is patched in versions 1.2.1 and 1.1.28.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.1.28v < 1.2.11.2.0 ≤ v < 1.2.1
Affected range stops below 1.1.28, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.2.1, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-80CWE-79

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