CVE-2026-13567

MEDIUM 5.3 PoC AVAILABLE

Published 2026-06-29 · Last modified 2026-06-29

A security flaw has been discovered in code-projects Online Music Site 1.0. This affects an unknown part of the file /Frontend/Feedback.php of the component POST Request Handler. The manipulation of the argument fname/femail/faddress/fmessage results in cross site scripting. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

EXPLOIT AVAILABLE

Public exploit or PoC code exists. Modeled probability is still low, but the barrier to attack is reduced — watch closely.

Exploitation likelihood

0.3%chance of exploitation in 30 days · 19th percentile

○ In CISA KEV ● Public exploit / PoC

Impact if exploited

5.3CVSS 4.0 · MEDIUM

ConfidentialityNone
IntegrityLow
AvailabilityNone

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
⚠User interaction: Succeeds with passive user activity
✓Complexity: No special conditions — reliably repeatable
✓Requirements: No special attack requirements

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept & exploit code

PoC https://github.com/qwessec/CVE/issues/1

Listed for defensive triage and patch prioritization.

Affected

Vendors Code Projects

Products Online Music Site

Weakness (CWE)

CWE-79: Cross-site scripting (XSS)
CWE-94: Code injection

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

References

Sources: NVD · CVE.org · EPSS