CVE-2026-5538Disclosure

LOWCVSS 5.3 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A vulnerability was detected in QingdaoU OnlineJudge up to 1.6.1. Affected by this issue is the function service_url of the file JudgeServer.service_url of the component judge_server_heartbeat Endpoint. The manipulation results in server-side request forgery. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-918

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-05: 2Technical Details · 2026-04-05: 104-05
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • CVEarity@CVEarity
    General

    ⚡ New CVE Alert: CVE-2026-5538 📊 Severity: 6.3 🚨 Risk Level: Medium 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-5538 #CVE-2026-5538 #CVE #Medium #CyberSecurity #InfoSec https://t.co/VRKDGUko8a

    Post summary

    The tweet announces CVE-2026-5538 with a medium severity rating but offers no details on exploitation, patches, or technical specifics.

    0000038
    121 followersView on X
  • CyberDudeBivash® | Global Cybersecurity Company@cyberbivash
    Disclosure

    🚨 CYBERDUDEBIVASH SENTINEL APEX ALERT 🚨 Threat: CVE-2026-5538 - QingdaoU OnlineJudge judge_server_heartbeat Endpoint JudgeServer.service_url server-side request forgery Intel Report: https://ift.tt/2nJvRTX

    Post summary

    The tweet announces CVE‑2026‑5538, noting its server‑side request forgery nature and provides an intel report link, but offers no evidence of exploitation, POC, or patch.

    0000054
    281 followersView on X

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