CVE-2026-53983PoC

LOWCVSS 9.2 · CRITICAL

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

Ground Station prior to 0.6.0 contains an unauthenticated blind server-side request forgery vulnerability in the orbital-source configuration path that allows any unauthenticated Socket.IO client to cause the ground-station process to issue outbound HTTP requests to attacker-chosen destinations. Attackers can connect to the Socket.IO server on port 7000 without credentials due to disabled authentication enforcement and a wildcard CORS policy, then submit a data_submission event with submit-orbital-sources action to persist an attacker-supplied URL in the database, then trigger an orbital sync via the equally unauthenticated background_task:start event. The URL is stored with no scheme allowlist, no host validation, and no rejection of loopback, RFC1918, or link-local (cloud instance metadata at 169.254.169.254) addresses, and is passed directly to requests.get in _fetch_http_3le and _fetch_http_omm in backend/tlesync/source_adapters.py. HTTP status codes and error messages from the outbound request are emitted in the orbital_sync_state Socket.IO event to all connected clients, providing a serviceable oracle for interpreting internal-service and cloud-metadata responses even though the raw response body is not directly leaked. Because the malicious source persists in the database across restarts and re-fires every 24 hours on the scheduled sync cycle, the primitive gives durable long-term SSRF without the attacker needing to remain connected.

1.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-918

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Threat summary

  • Public PoC is present in monitored signal
  • 1 mentions across 1 observed day

What's happening

  • PoC mentioned or linked in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-22: 1PoC Mentioned / Linked · 2026-09-22: 1Technical Details · 2026-09-22: 109-22
Signal classification1 categories
PoC
1100.0%
Referenced assets2 URLs
Full discourse1 post
  • Offensive360@offensive360
    PoC

    CVE-2026-53983: Ground Station <0.6.0, unauthenticated https://Socket.IO path leads to blind SSRF toward internal services and cloud metadata. Check which of your socket handlers skip the auth wrapper. https://offensive360.com/zerodays/cve-2026-53983-ground-station/?utm_medium=social&utm_campaign=vuln_research&utm_source=x&utm_content=20260922 #CVE #AppSec https://t.co/e7g8GuYPaU

    Post summary

    The post discloses CVE-2026-53983, an unauthenticated blind SSRF in Ground Station <0.6.0 via a Socket.IO path, and links to an offensive360 research page describing the vulnerability (PoC-focused disclosure), with no named exploit tool, active exploitation report, or patch/workaround guidance in the tweet text.

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    424 followersView on X

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