CVE-2026-9528

MEDIUM 6.9 PoC AVAILABLE

Published 2026-05-26 · Last modified 2026-05-26

A vulnerability was identified in itsourcecode Electronic Judging System 1.0. Impacted is an unknown function of the file /admin/delete_judge.php. Such manipulation of the argument judge_id leads to sql injection. The attack can be executed remotely. The exploit is publicly available and might be used.

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 · 24th percentile

○ In CISA KEV ● Public exploit / PoC

Impact if exploited

6.9CVSS 4.0 · MEDIUM

ConfidentialityLow
IntegrityLow
AvailabilityLow

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
✓User interaction: No user interaction needed
✓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/zulu225588/zulu-loudong/issues/4

Listed for defensive triage and patch prioritization.

Affected

Vendors Itsourcecode

Products Electronic Judging System

Weakness (CWE)

CWE-89: SQL injection
CWE-74: Injection

CVSS vector

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

References

Sources: NVD · CVE.org · EPSS