Unprivileged user can perform XSS attacks by constructing malicious team names.

High

GZTimeWalker published GHSA-p6rq-5x3x-rmhh

May 13, 2024

Package

GZCTF

Affected versions

<=0.20.0

Patched versions

0.20.1

Description

Impact

Unprivileged user can perform XSS attacks on other users by constructing malicious team names.

Patches

This problem has been fixed in v0.20.1.

Workarounds & References

See 31e775b, which disable markdown rendering for notices triggered by submitting a flag.

Severity

High

7.5

/ 10

CVSS base metrics

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H