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Cross site scripting in safe-svg

Moderate severity GitHub Reviewed Published Apr 19, 2022 to the GitHub Advisory Database • Updated Apr 17, 2023

Package

composer darylldoyle/safe-svg (Composer)

Affected versions

< 1.9.10

Patched versions

1.9.10

Description

The sanitisation step of the Safe SVG WordPress plugin before 1.9.10 can be bypassed by spoofing the content-type in the POST request to upload a file. Exploiting this vulnerability, an attacker will be able to perform the kinds of attacks that this plugin should prevent (mainly XSS, but depending on further use of uploaded SVG files potentially other XML attacks).

References

Published by the National Vulnerability Database Apr 18, 2022
Published to the GitHub Advisory Database Apr 19, 2022
Reviewed Apr 28, 2022
Last updated Apr 17, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS score

0.086%
(37th percentile)

Weaknesses

CVE ID

CVE-2022-1091

GHSA ID

GHSA-5h7w-hmxc-99g5

Source code

Credits

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