VulnSocial

CVE-2026-8905PoC

LOWCVSS 6.1 · MEDIUM

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

The Osiris Signature Banner plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.5. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

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1.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-352

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 · 2026-06-25: 1PoC Mentioned / Linked · 2026-06-25: 1Technical Details · 2026-06-25: 106-25
Signal classification1 categories
PoC
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Atomic Edge@atomicedgeWAF
    PoC

    https://atomicedge.io/cve-proof/cve-2026-8905-osiris-signature-banner-version-0-5-medium-vulnerability-proof-of-concept CVE-2026-8905 osiris-signature-banner (CVSS Score 6.1) #WordPress plugin #vulnerability #cybersecurity #wordpressfirewall #wordpresssecurity #hacking #wpsecu…

    Post summary

    A proof‑of‑concept for CVE‑2026‑8905, impacting the Osiris Signature Banner WordPress plugin, has been posted with a CVSS score of 6.1, but no active exploitation, patch, or detailed exploit code is provided.

    0000038
    11 followersView on X

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