CVE-2026-51833PoC

LOWCVSS 7.5 · HIGH

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

Xenforo 2.3.8 is vulnerable to SSRF. Attackers that have administrator privileges or are able to add/save RSS feeds can enumerate internal services (ports) or expose the original IP address of the server.

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1.5/ 10 priority

Sources & remediation

Other references

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
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

PoC

1100.0%

Referenced assets1 URL

By indicator

https://github.com/dennywise/CVE-2026-51833-Public-Disclosure

Full discourse1 post

Deniz Mert@dennywise084d
PoC
Ignoring security researchers doesn't make a zero-day vanish. Tonight I'm publicly disclosing a vulnerability due to absolute silence of @XenForo. Don't ignore your paid software's vulnerabilities and fix the flaw, silence is not the patch. https://github.com/dennywise/CVE-2026-51833-Public-Disclosure https://t.co/rfeWLStb9K
Post summary
The user publicly discloses CVE-2026-51833, sharing a GitHub link that likely contains proof‑of‑concept details, urging vendors to address the flaw.
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15 followersView on X

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